diff --git a/src/govoplan_resources/backend/manifest.py b/src/govoplan_resources/backend/manifest.py
index 34250e2..2aa7a33 100644
--- a/src/govoplan_resources/backend/manifest.py
+++ b/src/govoplan_resources/backend/manifest.py
@@ -15,7 +15,7 @@ OPTIONAL_DEPENDENCIES = (
     "facilities",
     "calendar",
     "files",
-    "workflow",
+    "workflow_engine",
 )