diff --git a/.github/workflows/build-pdf.yml b/.github/workflows/build-pdf.yml
index 7505997..fc928c7 100644
--- a/.github/workflows/build-pdf.yml
+++ b/.github/workflows/build-pdf.yml
@@ -46,7 +46,7 @@ jobs:
 
       - name: Cache Pandoc
         id: cache-pandoc
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /usr/local/bin/pandoc
           key: pandoc-3.1.11