diff --git a/README.md b/README.md
index 2a8d57b..649e7c6 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: arduino/cpp-test-action@main
+      - uses: arduino/cpp-test-action@v1
         with:
           coverage-data-path: ${{ env.COVERAGE_DATA_PATH }}