diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index 149684c4..a9972bdd 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -27,7 +27,7 @@ jobs:
         run: poetry config virtualenvs.in-project true
 
       - name: Set up cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache
         with:
           path: .venv
diff --git a/.github/workflows/python-test.yml b/.github/workflows/python-test.yml
index 02bda42d..5a09c15d 100644
--- a/.github/workflows/python-test.yml
+++ b/.github/workflows/python-test.yml
@@ -35,7 +35,7 @@ jobs:
         run: poetry config virtualenvs.in-project true
 
       - name: Set up cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache
         with:
           path: .venv
@@ -85,7 +85,7 @@ jobs:
         run: poetry config virtualenvs.in-project true
 
       - name: Set up cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache
         with:
           path: .venv