diff --git a/.github/workflows/hashes.yaml b/.github/workflows/hashes.yaml
index d0356d11..e0ab3da7 100644
--- a/.github/workflows/hashes.yaml
+++ b/.github/workflows/hashes.yaml
@@ -12,7 +12,7 @@ on:
 jobs:
   validate-hashes:
     name: Validate Hashes
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2
       - name: Install dependencies