diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 19ffd3f..929062e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ jobs:
           python-version: ${{ matrix.python }}
 
       # Install dependencies.
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         name: Python cache with dependencies.
         id: python-cache
         with:
diff --git a/.github/workflows/verify.yml b/.github/workflows/verify.yml
index d1b8176..ad84ec7 100644
--- a/.github/workflows/verify.yml
+++ b/.github/workflows/verify.yml
@@ -17,7 +17,7 @@ jobs:
           python-version: ${{ matrix.python }}
 
       # Install dependencies.
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         name: Python cache with dependencies.
         id: python-cache
         with:
@@ -49,7 +49,7 @@ jobs:
           python-version: ${{ matrix.python }}
 
       # Install dependencies.
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         name: Python cache with dependencies.
         id: python-cache
         with: