diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 45920c38..c2282a80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,9 +16,9 @@ jobs:
     name: JDK ${{ matrix.java }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
       - name: Set up JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@17f84c3641ba7b8f6deff6309fc4c864478f5d62 # v3
         with:
           java-version: ${{ matrix.java }}
           distribution: temurin