diff --git a/tasks.py b/tasks.py
index 44c4c94..a33596f 100644
--- a/tasks.py
+++ b/tasks.py
@@ -33,3 +33,6 @@ def release(c):
     # upload zip archive to server
     c.run(f'scp dist/{filename} weather.edbob.org:/srv/myweather/releases/{filename}')
     c.run(f"ssh weather.edbob.org 'cd /srv/myweather/releases; ln -sf {filename} latest.zip'")
+
+    # run upgrade on server
+    c.run('ssh weather.edbob.org /srv/myweather/upgrade.sh')