diff --git a/.github/workflows/unit-tests-all.yml b/.github/workflows/unit-tests-all.yml
index 2441bde..cc467db 100644
--- a/.github/workflows/unit-tests-all.yml
+++ b/.github/workflows/unit-tests-all.yml
@@ -37,7 +37,7 @@ jobs:
       - name: "show outputs.dir"
         run: echo "${{ steps.pip-cache.outputs.dir }}"
       - name: "cache pip packages"
-        uses: "actions/cache@v5"
+        uses: "actions/cache@v6"
         with:
           path: "${{ steps.pip-cache.outputs.dir }}"
           key: "${{ runner.os }}-pip-${{ hashFiles('**/base.txt', '**/local.txt') }}"