diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e2f3e54..8962140 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,10 +9,10 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
       with:
         python-version: 3.13