diff --git a/.github/workflows/build-unstable.yml b/.github/workflows/build-unstable.yml
index 890012c7..afd78a21 100644
--- a/.github/workflows/build-unstable.yml
+++ b/.github/workflows/build-unstable.yml
@@ -14,6 +14,7 @@ on:
         paths:
         -   pyscriptjs/**
         -   .github/workflows/build-latest.yml # Test that workflow works when changed
+    workflow_dispatch:
 
 env:
     MINICONDA_PYTHON_VERSION: py38