diff --git a/.github/workflows/nix-ci.yml b/.github/workflows/nix-ci.yml
index fccd4d09..f0de7f5c 100644
--- a/.github/workflows/nix-ci.yml
+++ b/.github/workflows/nix-ci.yml
@@ -4,10 +4,12 @@ on: [push, pull_request, workflow_dispatch]
 
 jobs:
   wlroots:
+    if: github.event_name != 'pull_request'
     uses: ./.github/workflows/nix-update-wlroots.yml
     secrets: inherit
 
   build:
+    if: always() && !cancelled() && !contains(needs.*.result, 'failure')
     needs: wlroots
     uses: ./.github/workflows/nix-build.yml
     secrets: inherit