diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2f08504..6e45bc4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.0
         with:
           fetch-depth: 0
       -
@@ -61,7 +61,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.0
         with:
           fetch-depth: 0
       -
diff --git a/.github/workflows/pre-checkin.yml b/.github/workflows/pre-checkin.yml
index 38808c1..b306623 100644
--- a/.github/workflows/pre-checkin.yml
+++ b/.github/workflows/pre-checkin.yml
@@ -14,7 +14,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.0
       -
         name: Install
         run: yarn install
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 28360d1..8f70ac4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.0
         with:
           fetch-depth: 0
       -