diff --git a/bundles/pretalx/items.py b/bundles/pretalx/items.py
index 37a7508..e5a04c8 100644
--- a/bundles/pretalx/items.py
+++ b/bundles/pretalx/items.py
@@ -8,7 +8,10 @@ actions = {
         },
     },
     'pretalx_install': {
-        'command': 'cd /opt/pretalx/src/src && /opt/pretalx/venv/bin/pip install --upgrade pip wheel gunicorn psycopg2-binary .[redis]',
+        'command':
+            'cd /opt/pretalx/src/src && '
+            '/opt/pretalx/venv/bin/pip install --upgrade pip wheel gunicorn psycopg2-binary && '
+            '/opt/pretalx/venv/bin/pip install --upgrade -e .[redis]',
         'needs': {
             'action:pretalx_create_virtualenv',
         },
@@ -176,7 +179,7 @@ for plugin_name, plugin_config in node.metadata.get('pretalx/plugins', {}).items
     }
 
     actions[f'pretalx_install_plugin_{plugin_name}'] = {
-        'command': f'cd /opt/pretalx/plugin_{plugin_name} && /opt/pretalx/venv/bin/pip install --upgrade .',
+        'command': f'cd /opt/pretalx/plugin_{plugin_name} && /opt/pretalx/venv/bin/pip install --upgrade -e .',
         'needs': {
             last_action,
         },