diff --git a/miniz_oxide/src/lib.rs b/miniz_oxide/src/lib.rs
index 5d94c10d..c2abb54b 100644
--- a/miniz_oxide/src/lib.rs
+++ b/miniz_oxide/src/lib.rs
@@ -21,6 +21,8 @@
 //!
 //! ```
 
+#![forbid(unsafe_code)]
+
 extern crate adler32;
 
 pub mod deflate;