diff --git a/src/govoplan_procurement/backend/manifest.py b/src/govoplan_procurement/backend/manifest.py
index 66fca2e..7e76527 100644
--- a/src/govoplan_procurement/backend/manifest.py
+++ b/src/govoplan_procurement/backend/manifest.py
@@ -17,7 +17,7 @@ OPTIONAL_DEPENDENCIES = (
     "erp",
     "ledger",
     "files",
-    "workflow",
+    "workflow_engine",
 )