diff --git a/.github/workflows/nix_build.yaml b/.github/workflows/nix_build.yaml
index f8fbf9aa..3e624fb9 100644
--- a/.github/workflows/nix_build.yaml
+++ b/.github/workflows/nix_build.yaml
@@ -1,5 +1,6 @@
 name: "Nix Build Docker image"
 on:
+  pull_request:
   push:
     branches:
       - 'main'