diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f2942b02..62d340e3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
       uses: actions/checkout@v2.3.4
 
     - name: Set up Ruby ${{ matrix.ruby }}
-      uses: actions/setup-ruby@v1
+      uses: actions/setup-ruby@v1.1.3
       with:
         ruby-version: ${{ matrix.ruby }}
 
diff --git a/.github/workflows/gempush.yml b/.github/workflows/gempush.yml
index 44599783..7c21b4d2 100644
--- a/.github/workflows/gempush.yml
+++ b/.github/workflows/gempush.yml
@@ -12,7 +12,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2.3.4
     - name: Set up Ruby 2.6
-      uses: actions/setup-ruby@v1
+      uses: actions/setup-ruby@v1.1.3
       with:
         ruby-version: 2.6.x