diff --git a/.github/workflows/run_spec.yml b/.github/workflows/run_spec.yml
index 73f9053..c445fae 100644
--- a/.github/workflows/run_spec.yml
+++ b/.github/workflows/run_spec.yml
@@ -24,9 +24,9 @@ jobs:
     env:
       LANG: en_US.UTF-8
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
     - name: Set up Ruby ${{  matrix.ruby }}
-      uses: ruby/setup-ruby@v1
+      uses: ruby/setup-ruby@4dc28cf14d77b0afa6832d9765ac422dbf0dfedd # v1.298.0
       with:
         ruby-version: ${{ matrix.ruby }}
     - name: Install dependencies