diff --git a/.github/workflows/build_docs.yaml b/.github/workflows/build_docs.yaml
index f9b0edfe4..fe6abdd5f 100644
--- a/.github/workflows/build_docs.yaml
+++ b/.github/workflows/build_docs.yaml
@@ -2,6 +2,7 @@ name: Build and deploy docs
 on:
   pull_request:
     branches:
+      - main
       - 'doc/**'
       - 'docs/**'
     tags: