diff --git a/src/govoplan_encryption/backend/manifest.py b/src/govoplan_encryption/backend/manifest.py
index 1c1c0ee..18a28cd 100644
--- a/src/govoplan_encryption/backend/manifest.py
+++ b/src/govoplan_encryption/backend/manifest.py
@@ -25,7 +25,7 @@ OPTIONAL_DEPENDENCIES = (
     "files",
     "postbox",
     "campaigns",
-    "workflow",
+    "workflow_engine",
 )