diff --git a/README.md b/README.md
index 077a60bc..39dff847 100644
--- a/README.md
+++ b/README.md
@@ -148,7 +148,7 @@ Example:
 include(FetchContent)
 
 FetchContent_Declare(json
-  GIT_REPOSITORY https://github.com/nlohmann/json
+  GIT_REPOSITORY https://github.com/nlohmann/json.git
   GIT_TAG v3.7.3)
 
 FetchContent_GetProperties(json)