diff --git a/.drone.yml b/.drone.yml
index 1c8b345..daddec2 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -7,7 +7,7 @@ steps:
   - name: Build
     image: git.libreitalia.org/libreitalia/site-builder:debian-1.0.2
     commands:
-      - source /app/venv/bin/activate
+      - . /app/venv/bin/activate
       - pip install -r /drone/src/requirements.txt
       - pelican /drone/src/content -o /drone/src/output -s /drone/src/publishconf.py