diff --git a/README.md b/README.md
index c05c67e5..006a0c24 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ use stock zlib.
 
 Library crates depending on `libz-sys` should use:
 
-```
+```toml
 libz-sys = { version = "1.1", default-features = false, features = ["libc"] }
 ```