diff --git a/src/govoplan_booking/backend/manifest.py b/src/govoplan_booking/backend/manifest.py
index 412be56..93d3874 100644
--- a/src/govoplan_booking/backend/manifest.py
+++ b/src/govoplan_booking/backend/manifest.py
@@ -17,7 +17,7 @@ OPTIONAL_DEPENDENCIES = (
     "mail",
     "notifications",
     "files",
-    "workflow",
+    "workflow_engine",
     "approvals",
     "portal",
 )