diff --git a/.github/workflows/cache-pixi-lock.yml b/.github/workflows/cache-pixi-lock.yml
index e190ce7b1..4bd488782 100644
--- a/.github/workflows/cache-pixi-lock.yml
+++ b/.github/workflows/cache-pixi-lock.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Get current date
         id: date
         run: echo "date=$(date +'%Y-%m-%d')" >> "$GITHUB_OUTPUT"
-      - uses: actions/cache/restore@v4
+      - uses: actions/cache/restore@v5
         id: restore
         with:
           path: |
@@ -38,7 +38,7 @@ jobs:
       - name: Run pixi lock
         if: ${{ !steps.restore.outputs.cache-hit }}
         run: pixi lock
-      - uses: actions/cache/save@v4
+      - uses: actions/cache/save@v5
         if: ${{ !steps.restore.outputs.cache-hit }}
         id: cache
         with:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e9d66dbe1..abc24593d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Restore cached pixi lockfile
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: restore-pixi-lock
         with:
           enableCrossOsArchive: true
@@ -54,7 +54,7 @@ jobs:
       # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#update-a-cache
       - name: Restore cached hypothesis directory
         id: restore-hypothesis-cache
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           path: .hypothesis/
           key: cache-hypothesis-${{ runner.os }}-${{ github.run_id }}
@@ -68,7 +68,7 @@ jobs:
       - name: Save cached hypothesis directory
         id: save-hypothesis-cache
         if: always() && steps.unit-test.outcome != 'skipped'
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           path: .hypothesis/
           key: cache-hypothesis-${{ runner.os }}-${{ github.run_id }}
@@ -103,7 +103,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Restore cached pixi lockfile
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: restore-pixi-lock
         with:
           enableCrossOsArchive: true
@@ -151,7 +151,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v5
       - name: Restore cached pixi lockfile
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: restore-pixi-lock
         with:
           path: |