diff --git a/src/pages/approval-workflows/[id]/index.tsx b/src/pages/approval-workflows/[id]/index.tsx
index 6cdaec9a..64a8026e 100644
--- a/src/pages/approval-workflows/[id]/index.tsx
+++ b/src/pages/approval-workflows/[id]/index.tsx
@@ -58,7 +58,13 @@ export const getServerSideProps = withIronSessionSsr(async ({ req, res, params }
     const allAssigneeIds: string[] = [
         ...new Set(
             workflow.steps
-                .map(step => step.assignees)
+                .map((step) => {
+                    const assignees = step.assignees;
+                    if (step.completedBy) {
+                        assignees.push(step.completedBy);
+                    }
+                    return assignees;
+                })
                 .flat()
         )
     ];