diff --git a/.github/workflows/pack-linux.yml b/.github/workflows/pack-linux.yml
index 6605f78..a3225d4 100644
--- a/.github/workflows/pack-linux.yml
+++ b/.github/workflows/pack-linux.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         ghc: ["9.8.2"]