diff --git a/.github/workflows/Code_Coverage.yml b/.github/workflows/Code_Coverage.yml
index 5a48a99a..a900a2e8 100644
--- a/.github/workflows/Code_Coverage.yml
+++ b/.github/workflows/Code_Coverage.yml
@@ -51,7 +51,7 @@ jobs:
 
       # ── CPM cache ─────────────────────────────────────────────────────
       - name: Cache CPM packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/cpm
           key: cpm-ubuntu-coverage-${{ hashFiles('**/CMakeLists.txt') }}
diff --git a/.github/workflows/sanitizers.yml b/.github/workflows/sanitizers.yml
index e208ca4d..98a6588a 100644
--- a/.github/workflows/sanitizers.yml
+++ b/.github/workflows/sanitizers.yml
@@ -154,7 +154,7 @@ jobs:
 
       # ── CPM cache ─────────────────────────────────────────────────────
       - name: Cache CPM packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/cpm
           key: cpm-ubuntu-san-${{ hashFiles('**/CMakeLists.txt') }}
diff --git a/.github/workflows/static_analysis.yml b/.github/workflows/static_analysis.yml
index 1cf564b4..b985ab77 100644
--- a/.github/workflows/static_analysis.yml
+++ b/.github/workflows/static_analysis.yml
@@ -48,7 +48,7 @@ jobs:
         uses: seanmiddleditch/gha-setup-ninja@v5
 
       - name: Cache CPM packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/cpm
           key: cpm-ubuntu-tidy-${{ hashFiles('**/CMakeLists.txt') }}