diff --git a/.github/workflows/ansible-linting-check.yml b/.github/workflows/ansible-linting-check.yml
index b74a2a2..2144e30 100644
--- a/.github/workflows/ansible-linting-check.yml
+++ b/.github/workflows/ansible-linting-check.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
 
       - name: Lint Ansible Playbook
         uses: ansible/ansible-lint-action@master
diff --git a/.github/workflows/galaxy.yml b/.github/workflows/galaxy.yml
index fde517d..7e13956 100644
--- a/.github/workflows/galaxy.yml
+++ b/.github/workflows/galaxy.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: galaxy
         uses: robertdebock/galaxy-action@1.1.1
         with:
diff --git a/.github/workflows/yamllint.yaml b/.github/workflows/yamllint.yaml
index d474e8b..c9df9da 100644
--- a/.github/workflows/yamllint.yaml
+++ b/.github/workflows/yamllint.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout'
-        uses: actions/checkout@master
+        uses: actions/checkout@v2.3.4
       - name: 'Yamllint'
         uses: karancode/yamllint-github-action@master
         with: