diff --git a/.github/workflows/pr-checks.yml b/.github/workflows/pr-checks.yml
index ce77462..de4c8a8 100644
--- a/.github/workflows/pr-checks.yml
+++ b/.github/workflows/pr-checks.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: checkout
-      uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - name: setup terraform
       uses: hashicorp/setup-terraform@633666f66e0061ca3b725c73b2ec20cd13a8fdd1 #v2.0.3
     - name: terraform fmt
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: checkout
-      uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - name: setup terraform
       uses: hashicorp/setup-terraform@633666f66e0061ca3b725c73b2ec20cd13a8fdd1 #v2.0.3
     - name: terraform init
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: checkout
-      uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - name: cache tflint
       uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # v3.3.1
       with: