diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5cdaf80..376dc00 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
         with:
           python-version: "3.10"
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ~/.cache/pipenv
           key: ${{ runner.os }}-pipenv-${{ hashFiles('**/Pipfile.lock') }}
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index bcd7e9a..f080dc5 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -26,7 +26,7 @@ jobs:
         id: pip-cache
         run: echo "PIP_CACHE_DIR=$(pip cache dir)" | tee -a "${GITHUB_OUTPUT}"
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ${{ steps.pip-cache.outputs.PIP_CACHE_DIR }}
           key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}