diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index f2f57a8..a68c4aa 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -13,18 +13,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@bfdd3570ce990073878bf10f6b2d79082de49492 # v2
         with:
           go-version: "1.19.3"
 
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Create LFS file list
         run: git lfs ls-files -l | cut -d' ' -f1 | sort > .lfs-assets-id
 
       - name: Restore LFS cache
-        uses: actions/cache@v2
+        uses: actions/cache@8492260343ad570701412c2f464a5877dc76bace # v2
         id: lfs-cache
         with:
           path: .git/lfs
@@ -34,7 +34,7 @@ jobs:
         run: git lfs pull
 
       - name: Go cache
-        uses: actions/cache@v2
+        uses: actions/cache@8492260343ad570701412c2f464a5877dc76bace # v2
         with:
           # In order:
           # * Module download cache