diff --git a/Cargo.lock b/Cargo.lock
index c356d4e..b60c2b8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -402,7 +402,7 @@ checksum = "ff8670570af52249509a86f5e3e18a08c60b177071826898fde8997cf5f6bfbb"
 dependencies = [
  "bytes",
  "fnv",
- "itoa 1.0.2",
+ "itoa",
 ]
 
 [[package]]
@@ -464,12 +464,6 @@ dependencies = [
  "waker-fn",
 ]
 
-[[package]]
-name = "itoa"
-version = "0.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
-
 [[package]]
 name = "itoa"
 version = "1.0.2"
@@ -899,11 +893,11 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.59"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcac07dbffa1c65e7f816ab9eba78eb142c6d44410f4eeba1e26e4f5dfa56b95"
+checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c"
 dependencies = [
- "itoa 0.4.8",
+ "itoa",
  "ryu",
  "serde",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 25fed11..aa0411c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -69,7 +69,7 @@ version = "=5.0.1"
 version = "=0.8.24"
 
 [dependencies.serde_json]
-version = "=1.0.59"
+version = "=1.0.81"
 
 [dependencies.isahc]
 version = "=1.7.1"