diff --git a/.drone.yaml b/.drone.yaml
index dca9442..50649da 100644
--- a/.drone.yaml
+++ b/.drone.yaml
@@ -16,3 +16,6 @@ steps:
   - $POETRY_HOME/bin/pip install poetry==1.3.2
   - $POETRY_HOME/bin/poetry install
   - $POETRY_HOME/bin/poetry publish --build --username $PYPI_USERNAME --password $PYPI_PASSWORD
+  when:
+    branch:
+    - main