diff --git a/.github/workflows/build_documentation.yml b/.github/workflows/build_documentation.yml
index b25567fb09..c55638ded1 100644
--- a/.github/workflows/build_documentation.yml
+++ b/.github/workflows/build_documentation.yml
@@ -1,6 +1,7 @@
 name: Build documentation
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main