diff --git a/Cargo.lock b/Cargo.lock
index 4b3e337..597d7d1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -195,6 +195,7 @@ dependencies = [
  "git2",
  "regex",
  "serde",
+ "serde_yaml",
  "shellexpand",
  "tempdir",
  "toml",
@@ -336,6 +337,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
+
 [[package]]
 name = "lock_api"
 version = "0.4.5"
@@ -592,6 +599,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73b4b750c782965c211b42f022f59af1fbceabdd026623714f104152f1ec149f"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -618,6 +631,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_yaml"
+version = "0.8.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a521f2940385c165a24ee286aa8599633d162077a54bdcae2a6fd5a7bfa7a0"
+dependencies = [
+ "indexmap",
+ "ryu",
+ "serde",
+ "yaml-rust",
+]
+
 [[package]]
 name = "shellexpand"
 version = "2.1.0"
@@ -850,3 +875,12 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "yaml-rust"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
+dependencies = [
+ "linked-hash-map",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 2f6d8ff..9329e3f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -62,5 +62,8 @@ version = "=1.5.4"
 [dependencies.comfy-table]
 version = "=5.0.0"
 
+[dependencies.serde_yaml]
+version = "=0.8.23"
+
 [dev-dependencies.tempdir]
 version = "=0.3.7"
diff --git a/docs/src/overview.md b/docs/src/overview.md
index 7583d19..082678a 100644
--- a/docs/src/overview.md
+++ b/docs/src/overview.md
@@ -5,7 +5,8 @@ Manager](https://github.com/hakoerber/git-repo-manager/) (GRM for short), a
 tool that helps you manage git repositories.
 
 GRM helps you manage git repositories in a declarative way. Configure your
-repositories in a TOML file, GRM does the rest. Take a look at [the example
+repositories in a TOML or YAML file, GRM does the rest. Take a look at [the
+example
 configuration](https://github.com/hakoerber/git-repo-manager/blob/master/example.config.toml)
 to get a feel for the way you configure your repositories. See the [repository
 tree chapter](./repos.md) for details.
diff --git a/docs/src/repos.md b/docs/src/repos.md
index 32d6ccb..69004f8 100644
--- a/docs/src/repos.md
+++ b/docs/src/repos.md
@@ -74,3 +74,9 @@ $ grm repos status
 ╰──────────┴──────────┴────────┴──────────┴───────┴─────────╯
 ```
 
+## YAML
+
+By default, the repo configuration uses TOML. If you prefer YAML, just give it
+a YAML file instead (file ending does not matter, `grm` will figure out the format
+itself). For generating a configuration, pass `--format yaml` to `grm repo find`
+to generate YAML instead of TOML.
diff --git a/e2e_tests/test_repos_find.py b/e2e_tests/test_repos_find.py
index 2939e95..cf6e692 100644
--- a/e2e_tests/test_repos_find.py
+++ b/e2e_tests/test_repos_find.py
@@ -3,6 +3,8 @@
 import tempfile
 
 import toml
+import pytest
+import yaml
 
 from helpers import *
 
@@ -30,6 +32,16 @@ def test_repos_find_empty():
         assert len(cmd.stderr) != 0
 
 
+def test_repos_find_invalid_format():
+    with tempfile.TemporaryDirectory() as tmpdir:
+        cmd = grm(
+            ["repos", "find", tmpdir, "--format", "invalidformat"], is_invalid=True
+        )
+        assert cmd.returncode != 0
+        assert len(cmd.stdout) == 0
+        assert "isn't a valid value" in cmd.stderr
+
+
 def test_repos_find_non_git_repos():
     with tempfile.TemporaryDirectory() as tmpdir:
         shell(
@@ -50,7 +62,9 @@ def test_repos_find_non_git_repos():
         assert len(cmd.stderr) != 0
 
 
-def test_repos_find():
+@pytest.mark.parametrize("default", [True, False])
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_find(configtype, default):
     with tempfile.TemporaryDirectory() as tmpdir:
         shell(
             f"""
@@ -83,11 +97,19 @@ def test_repos_find():
         """
         )
 
-        cmd = grm(["repos", "find", tmpdir])
+        args = ["repos", "find", tmpdir]
+        if not default:
+            args += ["--format", configtype]
+        cmd = grm(args)
         assert cmd.returncode == 0
         assert len(cmd.stderr) == 0
 
-        output = toml.loads(cmd.stdout)
+        if default or configtype == "toml":
+            output = toml.loads(cmd.stdout)
+        elif configtype == "yaml":
+            output = yaml.safe_load(cmd.stdout)
+        else:
+            raise NotImplementedError()
 
         assert isinstance(output, dict)
         assert set(output.keys()) == {"trees"}
@@ -125,14 +147,24 @@ def test_repos_find():
             assert origin["url"] == "https://example.com/repo2.git"
 
 
-def test_repos_find_in_root():
+@pytest.mark.parametrize("default", [True, False])
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_find_in_root(configtype, default):
     with TempGitRepository() as repo_dir:
 
-        cmd = grm(["repos", "find", repo_dir])
+        args = ["repos", "find", repo_dir]
+        if not default:
+            args += ["--format", configtype]
+        cmd = grm(args)
         assert cmd.returncode == 0
         assert len(cmd.stderr) == 0
 
-        output = toml.loads(cmd.stdout)
+        if default or configtype == "toml":
+            output = toml.loads(cmd.stdout)
+        elif configtype == "yaml":
+            output = yaml.safe_load(cmd.stdout)
+        else:
+            raise NotImplementedError()
 
         assert isinstance(output, dict)
         assert set(output.keys()) == {"trees"}
@@ -160,7 +192,9 @@ def test_repos_find_in_root():
             assert someremote["type"] == "file"
 
 
-def test_repos_find_with_invalid_repo():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+@pytest.mark.parametrize("default", [True, False])
+def test_repos_find_with_invalid_repo(configtype, default):
     with tempfile.TemporaryDirectory() as tmpdir:
         shell(
             f"""
@@ -193,11 +227,19 @@ def test_repos_find_with_invalid_repo():
         """
         )
 
-        cmd = grm(["repos", "find", tmpdir])
+        args = ["repos", "find", tmpdir]
+        if not default:
+            args += ["--format", configtype]
+        cmd = grm(args)
         assert cmd.returncode == 0
         assert "broken" in cmd.stderr
 
-        output = toml.loads(cmd.stdout)
+        if default or configtype == "toml":
+            output = toml.loads(cmd.stdout)
+        elif configtype == "yaml":
+            output = yaml.safe_load(cmd.stdout)
+        else:
+            raise NotImplementedError()
 
         assert isinstance(output, dict)
         assert set(output.keys()) == {"trees"}
diff --git a/e2e_tests/test_repos_sync.py b/e2e_tests/test_repos_sync.py
index 62e0cca..2586943 100644
--- a/e2e_tests/test_repos_sync.py
+++ b/e2e_tests/test_repos_sync.py
@@ -2,6 +2,7 @@
 
 import tempfile
 import re
+import textwrap
 
 import pytest
 import toml
@@ -9,8 +10,134 @@ import git
 
 from helpers import *
 
+templates = {
+    "repo_simple": {
+        "toml": """
+            [[trees]]
+            root = "{root}"
 
-def test_repos_sync_config_is_valid_symlink():
+            [[trees.repos]]
+            name = "test"
+        """,
+        "yaml": """
+            trees:
+            - root: "{root}"
+              repos:
+              - name: "test"
+        """,
+    },
+    "repo_with_remote": {
+        "toml": """
+            [[trees]]
+            root = "{root}"
+
+            [[trees.repos]]
+            name = "test"
+
+            [[trees.repos.remotes]]
+            name = "{remotename}"
+            url = "file://{remote}"
+            type = "file"
+        """,
+        "yaml": textwrap.dedent(
+            """
+            trees:
+            - root: "{root}"
+              repos:
+              - name: test
+                remotes:
+                - name: "{remotename}"
+                  url: "file://{remote}"
+                  type: "file"
+        """
+        ),
+    },
+    "repo_with_two_remotes": {
+        "toml": """
+            [[trees]]
+            root = "{root}"
+
+            [[trees.repos]]
+            name = "test"
+
+            [[trees.repos.remotes]]
+            name = "origin"
+            url = "file://{remote1}"
+            type = "file"
+
+            [[trees.repos.remotes]]
+            name = "origin2"
+            url = "file://{remote2}"
+            type = "file"
+        """,
+        "yaml": textwrap.dedent(
+            """
+            trees:
+            - root: "{root}"
+              repos:
+              - name: "test"
+                remotes:
+                - name: "origin"
+                  url: "file://{remote1}"
+                  type: "file"
+                - name: "origin2"
+                  url: "file://{remote2}"
+                  type: "file"
+        """
+        ),
+    },
+    "worktree_repo_simple": {
+        "toml": """
+            [[trees]]
+            root = "{root}"
+
+            [[trees.repos]]
+            name = "test"
+            worktree_setup = true
+        """,
+        "yaml": textwrap.dedent(
+            """
+            trees:
+            - root: "{root}"
+              repos:
+              - name: test
+                worktree_setup: true
+        """
+        ),
+    },
+    "worktree_repo_with_remote": {
+        "toml": """
+            [[trees]]
+            root = "{root}"
+
+            [[trees.repos]]
+            name = "test"
+            worktree_setup = true
+
+            [[trees.repos.remotes]]
+            name = "origin"
+            url = "file://{remote}"
+            type = "file"
+        """,
+        "yaml": textwrap.dedent(
+            """
+            trees:
+            - root: "{root}"
+              repos:
+              - name: test
+                worktree_setup: true
+                remotes:
+                - name: origin
+                  url: "file://{remote}"
+                  type: "file"
+        """
+        ),
+    },
+}
+
+
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_config_is_valid_symlink(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote, head_commit_sha):
             with tempfile.NamedTemporaryFile() as config:
@@ -20,20 +147,13 @@ def test_repos_sync_config_is_valid_symlink():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote, remotename="origin"
+                            )
                         )
 
+                    subprocess.run(["cat", config.name])
+
                     cmd = grm(["repos", "sync", "--config", config_symlink])
                     assert cmd.returncode == 0
 
@@ -85,20 +205,13 @@ def test_repos_sync_config_is_unreadable():
         assert "permission denied" in cmd.stderr.lower()
 
 
-def test_repos_sync_unmanaged_repos():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_unmanaged_repos(configtype):
     with tempfile.TemporaryDirectory() as root:
         with TempGitRepository(dir=root) as unmanaged_repo:
             with tempfile.NamedTemporaryFile() as config:
                 with open(config.name, "w") as f:
-                    f.write(
-                        f"""
-                        [[trees]]
-                        root = "{root}"
-
-                        [[trees.repos]]
-                        name = "test"
-                    """
-                    )
+                    f.write(templates["repo_simple"][configtype].format(root=root))
 
                 cmd = grm(["repos", "sync", "--config", config.name])
                 assert cmd.returncode == 0
@@ -112,19 +225,12 @@ def test_repos_sync_unmanaged_repos():
                 assert any([re.match(regex, l) for l in cmd.stderr.lower().split("\n")])
 
 
-def test_repos_sync_root_is_file():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_root_is_file(configtype):
     with tempfile.NamedTemporaryFile() as target:
         with tempfile.NamedTemporaryFile() as config:
             with open(config.name, "w") as f:
-                f.write(
-                    f"""
-                    [[trees]]
-                    root = "{target.name}"
-
-                    [[trees.repos]]
-                    name = "test"
-                """
-                )
+                f.write(templates["repo_simple"][configtype].format(root=target.name))
 
             cmd = grm(["repos", "sync", "--config", config.name])
             assert cmd.returncode != 0
@@ -132,30 +238,17 @@ def test_repos_sync_root_is_file():
             assert "not a directory" in cmd.stderr.lower()
 
 
-def test_repos_sync_normal_clone():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_clone(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-
-                            [[trees.repos.remotes]]
-                            name = "origin2"
-                            url = "file://{remote2}"
-                            type = "file"
-                        """
+                            templates["repo_with_two_remotes"][configtype].format(
+                                root=target, remote1=remote1, remote2=remote2
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -183,19 +276,12 @@ def test_repos_sync_normal_clone():
                         assert urls[0] == f"file://{remote2}"
 
 
-def test_repos_sync_normal_init():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_init(configtype):
     with tempfile.TemporaryDirectory() as target:
         with tempfile.NamedTemporaryFile() as config:
             with open(config.name, "w") as f:
-                f.write(
-                    f"""
-                    [[trees]]
-                    root = "{target}"
-
-                    [[trees.repos]]
-                    name = "test"
-                """
-                )
+                f.write(templates["repo_simple"][configtype].format(root=target))
 
             cmd = grm(["repos", "sync", "--config", config.name])
             assert cmd.returncode == 0
@@ -210,25 +296,17 @@ def test_repos_sync_normal_init():
                 assert not repo.head.is_valid()
 
 
-def test_repos_sync_normal_add_remote():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_add_remote(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -246,23 +324,9 @@ def test_repos_sync_normal_add_remote():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-
-                            [[trees.repos.remotes]]
-                            name = "origin2"
-                            url = "file://{remote2}"
-                            type = "file"
-                        """
+                            templates["repo_with_two_remotes"][configtype].format(
+                                root=target, remote1=remote1, remote2=remote2
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -282,30 +346,17 @@ def test_repos_sync_normal_add_remote():
                         assert urls[0] == f"file://{remote2}"
 
 
-def test_repos_sync_normal_remove_remote():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_remove_remote(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-
-                            [[trees.repos.remotes]]
-                            name = "origin2"
-                            url = "file://{remote2}"
-                            type = "file"
-                        """
+                            templates["repo_with_two_remotes"][configtype].format(
+                                root=target, remote1=remote1, remote2=remote2
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -326,18 +377,9 @@ def test_repos_sync_normal_remove_remote():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin2"
-                            url = "file://{remote2}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote2, remotename="origin2"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -369,25 +411,17 @@ def test_repos_sync_normal_remove_remote():
                         assert urls[0] == f"file://{remote2}"
 
 
-def test_repos_sync_normal_change_remote_url():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_change_remote_url(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -405,18 +439,9 @@ def test_repos_sync_normal_change_remote_url():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote2}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote2, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -429,25 +454,17 @@ def test_repos_sync_normal_change_remote_url():
                         assert urls[0] == f"file://{remote2}"
 
 
-def test_repos_sync_normal_change_remote_name():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_change_remote_name(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -465,18 +482,9 @@ def test_repos_sync_normal_change_remote_name():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin2"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin2"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -492,25 +500,16 @@ def test_repos_sync_normal_change_remote_name():
                         assert urls[0] == f"file://{remote1}"
 
 
-def test_repos_sync_worktree_clone():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_worktree_clone(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote, head_commit_sha):
             with tempfile.NamedTemporaryFile() as config:
                 with open(config.name, "w") as f:
                     f.write(
-                        f"""
-                        [[trees]]
-                        root = "{target}"
-
-                        [[trees.repos]]
-                        name = "test"
-                        worktree_setup = true
-
-                        [[trees.repos.remotes]]
-                        name = "origin"
-                        url = "file://{remote}"
-                        type = "file"
-                    """
+                        templates["worktree_repo_with_remote"][configtype].format(
+                            root=target, remote=remote, remotename="origin"
+                        )
                     )
 
                 cmd = grm(["repos", "sync", "--config", config.name])
@@ -530,19 +529,13 @@ def test_repos_sync_worktree_clone():
                     assert str(repo.head.commit) == head_commit_sha
 
 
-def test_repos_sync_worktree_init():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_worktree_init(configtype):
     with tempfile.TemporaryDirectory() as target:
         with tempfile.NamedTemporaryFile() as config:
             with open(config.name, "w") as f:
                 f.write(
-                    f"""
-                    [[trees]]
-                    root = "{target}"
-
-                    [[trees.repos]]
-                    name = "test"
-                    worktree_setup = true
-                """
+                    templates["worktree_repo_simple"][configtype].format(root=target)
                 )
 
             cmd = grm(["repos", "sync", "--config", config.name])
@@ -559,43 +552,42 @@ def test_repos_sync_worktree_init():
                 assert not repo.head.is_valid()
 
 
-def test_repos_sync_invalid_toml():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_invalid_syntax(configtype):
     with tempfile.NamedTemporaryFile() as config:
         with open(config.name, "w") as f:
-            f.write(
-                f"""
-                [[trees]]
-                root = invalid as there are no quotes ;)
-            """
-            )
+            if configtype == "toml":
+                f.write(
+                    f"""
+                    [[trees]]
+                    root = invalid as there are no quotes ;)
+                """
+                )
+            elif configtype == "yaml":
+                f.write(
+                    f"""
+                    trees:
+                    wrong:
+                    indentation:
+                """
+                )
+            else:
+                raise NotImplementedError()
             cmd = grm(["repos", "sync", "--config", config.name])
             assert cmd.returncode != 0
 
 
-def test_repos_sync_unchanged():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_unchanged(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-
-                            [[trees.repos.remotes]]
-                            name = "origin2"
-                            url = "file://{remote2}"
-                            type = "file"
-                        """
+                            templates["repo_with_two_remotes"][configtype].format(
+                                root=target, remote1=remote1, remote2=remote2
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -609,25 +601,17 @@ def test_repos_sync_unchanged():
                     assert before == after
 
 
-def test_repos_sync_normal_change_to_worktree():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_normal_change_to_worktree(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -637,19 +621,9 @@ def test_repos_sync_normal_change_to_worktree():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-                            worktree_setup = true
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["worktree_repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -658,26 +632,17 @@ def test_repos_sync_normal_change_to_worktree():
                     assert "not using a worktree setup" in cmd.stderr
 
 
-def test_repos_sync_worktree_change_to_normal():
+@pytest.mark.parametrize("configtype", ["toml", "yaml"])
+def test_repos_sync_worktree_change_to_normal(configtype):
     with tempfile.TemporaryDirectory() as target:
         with TempGitFileRemote() as (remote1, remote1_head_commit_sha):
             with TempGitFileRemote() as (remote2, remote2_head_commit_sha):
                 with tempfile.NamedTemporaryFile() as config:
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-                            worktree_setup = true
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["worktree_repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
@@ -687,18 +652,9 @@ def test_repos_sync_worktree_change_to_normal():
 
                     with open(config.name, "w") as f:
                         f.write(
-                            f"""
-                            [[trees]]
-                            root = "{target}"
-
-                            [[trees.repos]]
-                            name = "test"
-
-                            [[trees.repos.remotes]]
-                            name = "origin"
-                            url = "file://{remote1}"
-                            type = "file"
-                        """
+                            templates["repo_with_remote"][configtype].format(
+                                root=target, remote=remote1, remotename="origin"
+                            )
                         )
 
                     cmd = grm(["repos", "sync", "--config", config.name])
diff --git a/example.config.yaml b/example.config.yaml
new file mode 100644
index 0000000..2c4152d
--- /dev/null
+++ b/example.config.yaml
@@ -0,0 +1,16 @@
+trees:
+- root: "~/example-projects/"
+  repos:
+  - name: "git-repo-manager"
+    remotes:
+    - name: "origin"
+      url: "https://code.hkoerber.de/hannes/git-repo-manager.git"
+      type: "https"
+    - name: "github"
+      url: "https://github.com/hakoerber/git-repo-manager.git"
+      type: "https"
+  - name: "dotfiles"
+    remotes:
+    - name: "origin"
+      url: "https://github.com/hakoerber/dotfiles.git"
+      type: "https"
diff --git a/src/config.rs b/src/config.rs
index efcf6e6..e81c6a0 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -36,6 +36,10 @@ impl Config {
             Err(error) => Err(error.to_string()),
         }
     }
+
+    pub fn as_yaml(&self) -> Result<String, String> {
+        serde_yaml::to_string(self).map_err(|e| e.to_string())
+    }
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -62,12 +66,15 @@ pub fn read_config(path: &str) -> Result<Config, String> {
 
     let config: Config = match toml::from_str(&content) {
         Ok(c) => c,
-        Err(e) => {
-            return Err(format!(
-                "Error parsing configuration file \"{}\": {}",
-                path, e
-            ))
-        }
+        Err(_) => match serde_yaml::from_str(&content) {
+            Ok(c) => c,
+            Err(e) => {
+                return Err(format!(
+                    "Error parsing configuration file \"{}\": {}",
+                    path, e
+                ))
+            }
+        },
     };
 
     Ok(config)
diff --git a/src/grm/cmd.rs b/src/grm/cmd.rs
index 4307a66..1ea9a02 100644
--- a/src/grm/cmd.rs
+++ b/src/grm/cmd.rs
@@ -61,10 +61,25 @@ pub struct OptionalConfig {
     pub config: Option<String>,
 }
 
+#[derive(clap::ArgEnum, Clone)]
+pub enum ConfigFormat {
+    Yaml,
+    Toml,
+}
+
 #[derive(Parser)]
 pub struct Find {
     #[clap(help = "The path to search through")]
     pub path: String,
+
+    #[clap(
+        arg_enum,
+        short,
+        long,
+        help = "Format to produce",
+        default_value_t = ConfigFormat::Toml,
+    )]
+    pub format: ConfigFormat,
 }
 
 #[derive(Parser)]
diff --git a/src/grm/main.rs b/src/grm/main.rs
index bc63641..50547da 100644
--- a/src/grm/main.rs
+++ b/src/grm/main.rs
@@ -119,15 +119,34 @@ fn main() {
                 } else {
                     let config = trees.to_config();
 
-                    let toml = match config.as_toml() {
-                        Ok(toml) => toml,
-                        Err(error) => {
-                            print_error(&format!("Failed converting config to TOML: {}", &error));
-                            process::exit(1);
+                    match find.format {
+                        cmd::ConfigFormat::Toml => {
+                            let toml = match config.as_toml() {
+                                Ok(toml) => toml,
+                                Err(error) => {
+                                    print_error(&format!(
+                                        "Failed converting config to TOML: {}",
+                                        &error
+                                    ));
+                                    process::exit(1);
+                                }
+                            };
+                            print!("{}", toml);
                         }
-                    };
-
-                    print!("{}", toml);
+                        cmd::ConfigFormat::Yaml => {
+                            let yaml = match config.as_yaml() {
+                                Ok(yaml) => yaml,
+                                Err(error) => {
+                                    print_error(&format!(
+                                        "Failed converting config to YAML: {}",
+                                        &error
+                                    ));
+                                    process::exit(1);
+                                }
+                            };
+                            print!("{}", yaml);
+                        }
+                    }
                 }
                 for warning in warnings {
                     print_warning(&warning);