diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 01a595e7..ab3994ee 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -64,7 +64,7 @@ jobs:
           tools: composer:v2
 
       - name: "Cache dependencies"
-        uses: "actions/cache@v5"
+        uses: "actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9" # v6
         with:
           path: |
             ~/.composer/cache
@@ -115,7 +115,7 @@ jobs:
           tools: composer:v2
 
       - name: "Cache dependencies"
-        uses: "actions/cache@v5"
+        uses: "actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9" # v6
         with:
           path: |
             ~/.composer/cache