diff --git a/Deprecated.md b/Deprecated.md
index 983f8690..66f05b4e 100644
--- a/Deprecated.md
+++ b/Deprecated.md
@@ -34,7 +34,7 @@ be discussed using [the proposal process](https://go.dev/s/proposal).
 
 ## Examples
 
-```
+```golang
 type ResponseRecorder struct {
 	// HeaderMap contains the headers explicitly set by the Handler.
 	// It is an internal detail.
@@ -45,7 +45,7 @@ type ResponseRecorder struct {
 	HeaderMap http.Header
 ```
 
-```
+```golang
 // Package rc4 implements the RC4 stream cipher.
 //
 // Deprecated: RC4 is cryptographically broken and should not be used