diff --git a/go-fast-replace/README.md b/go-fast-replace/README.md
index ea71b10..2907f40 100644
--- a/go-fast-replace/README.md
+++ b/go-fast-replace/README.md
@@ -4,19 +4,19 @@ An implementation in Go.
 
 ## To build
 
-````bash
+````shell
 make build
 ````
 
 ## To run
 
-````bash
+````shell
 make run
 ````
 
 ## To test
 
-````bash
+````shell
 make test
 ````