diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca1405f..ca2f6ab 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -54,7 +54,7 @@ jobs:
         uses: hashicorp/setup-terraform@b9cd54a3c349d3f38e8881555d616ced269862dd # v3
 
       - name: Setup TFLint
-        uses: terraform-linters/setup-tflint@v4
+        uses: terraform-linters/setup-tflint@19a52fbac37dacb22a09518e4ef6ee234f2d4987 # v4
 
       - name: Discover Modules
         run: |