diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6e474bf..d13747f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
   build-test:
     runs-on: [moon, amd64]
     container:
-      image: harbor.hq.rosti.cz/library/builder:39
+      image: harbor.hq.rosti.cz/library/builder:38
       env:
         REPO: harbor.hq.rosti.cz
         USERNAME: robot$rosti+rosti