diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 2223658..beffd6a 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -85,6 +85,9 @@ jobs:
       - name: Generate Prisma client (labd typecheck needs it)
         run: pnpm -C src/labd run db:generate
 
+      - name: Install test validators (ubuntu-autoinstall parses YAML via python, kickstart.test runs ksvalidator)
+        run: sudo apt-get update -qq && sudo apt-get install -y -qq python3-yaml pykickstart
+
       - name: Build (needed by completions check)
         run: pnpm build