diff --git a/src/Model/Types/Workflow.hs b/src/Model/Types/Workflow.hs
index 98d7dccd5..f7d96375e 100644
--- a/src/Model/Types/Workflow.hs
+++ b/src/Model/Types/Workflow.hs
@@ -684,6 +684,8 @@ data WorkflowWorkflowListType = WorkflowWorkflowListActive | WorkflowWorkflowLis
   deriving (Eq, Ord, Enum, Bounded, Read, Show, Generic, Typeable)
   deriving anyclass (Universe, Finite)
 
+instance Hashable WorkflowWorkflowListType
+
 
 ----- Lenses needed here -----