diff --git a/.github/workflows/generate-fonts.yml b/.github/workflows/generate-fonts.yml
index 136d4d6..0974674 100644
--- a/.github/workflows/generate-fonts.yml
+++ b/.github/workflows/generate-fonts.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       NERDFONTVERS: v2.1.0
     steps: