diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 720eeae..77674d5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -79,7 +79,7 @@ jobs:
           python-version: ${{ env.PYTHON_VERSION }}
 
       - name: Cache uv
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.cache/uv
           key: uv-${{ runner.os }}-py${{ env.PYTHON_VERSION }}-${{ hashFiles('uv.lock') }}
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index fdb3600..a47ea3a 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -136,7 +136,7 @@ jobs:
           ref: ${{ inputs.ref || github.ref }}
 
       - name: Cache npm
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.npm
           key: npm-${{ runner.os }}-markdownlint-cli2-${{ env.MARKDOWNLINT_CLI2_VERSION }}
@@ -168,7 +168,7 @@ jobs:
           python-version: ${{ env.PYTHON_VERSION }}
 
       - name: Cache uv
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.cache/uv
           key: uv-${{ runner.os }}-py${{ env.PYTHON_VERSION }}-${{ hashFiles('uv.lock') }}
@@ -228,7 +228,7 @@ jobs:
           python-version: ${{ env.PYTHON_VERSION }}
 
       - name: Cache uv
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.cache/uv
           key: uv-${{ runner.os }}-py${{ env.PYTHON_VERSION }}-${{ hashFiles('uv.lock') }}