diff --git a/.github/workflows/clang-format-linter.yml b/.github/workflows/clang-format-linter.yml
index c59dd58..e7ef7bc 100644
--- a/.github/workflows/clang-format-linter.yml
+++ b/.github/workflows/clang-format-linter.yml
@@ -7,6 +7,6 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@50fbc622fc4ef5163becd7fab6573eac35f8462e # v1.2.0
 
     - uses: InsightSoftwareConsortium/ITKClangFormatLinterAction@master
diff --git a/.github/workflows/wasm.yml b/.github/workflows/wasm.yml
index a9f4b9c..b1356f8 100644
--- a/.github/workflows/wasm.yml
+++ b/.github/workflows/wasm.yml
@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@24cb9080177205b6e8c946b17badbe402adc938f # v3.4.0
 
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
       with:
         node-version: '18'