diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c116f18e..314dbd91 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2.3.4
     - name: Set up Ruby
-      uses: ruby/setup-ruby@v1.76.0
+      uses: ruby/setup-ruby@v1.77.0
       with:
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests
diff --git a/.github/workflows/schedule-doc-report.yml b/.github/workflows/schedule-doc-report.yml
index a8d5b1bf..e40ce4db 100644
--- a/.github/workflows/schedule-doc-report.yml
+++ b/.github/workflows/schedule-doc-report.yml
@@ -10,7 +10,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2.3.4
     - name: Set up Ruby
-      uses: ruby/setup-ruby@v1.76.0
+      uses: ruby/setup-ruby@v1.77.0
       with:
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Generate report
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e88a0d5a..653c9e42 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2.3.4
     - name: Set up Ruby
-      uses: ruby/setup-ruby@v1.76.0
+      uses: ruby/setup-ruby@v1.77.0
       with:
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests