diff --git a/.github/workflows/build_docs.yml b/.github/workflows/build_docs.yml
index 39ed738..f12aa14 100644
--- a/.github/workflows/build_docs.yml
+++ b/.github/workflows/build_docs.yml
@@ -1,7 +1,7 @@
 name: Build Documentation
 
 on:
-  push:
+  pull_request:
     paths:
       - "docs/testssl.1.md"