diff --git a/.github/workflows/build-pdf.yml b/.github/workflows/build-pdf.yml
index 65c3b6d..b880573 100644
--- a/.github/workflows/build-pdf.yml
+++ b/.github/workflows/build-pdf.yml
@@ -19,7 +19,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     env:
       APT_PACKAGES_FILE: ${{ github.workspace }}/dependencies/apt_packages.txt