diff --git a/src/grm/main.rs b/src/grm/main.rs
index 5972102..2c46f11 100644
--- a/src/grm/main.rs
+++ b/src/grm/main.rs
@@ -1,3 +1,5 @@
+#![forbid(unsafe_code)]
+
 use std::path::Path;
 use std::process;
 
diff --git a/src/lib.rs b/src/lib.rs
index 7cbf992..d406b95 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,6 @@
 #![feature(io_error_more)]
 #![feature(const_option_ext)]
+#![forbid(unsafe_code)]
 
 use std::path::Path;