diff --git a/submodules/dagflow b/submodules/dagflow
index 3360a76aa6d894c5240216dda94f8d9db1405f3e..1491f811cb0dd5417883472a8c1340b8a1e77833 160000
--- a/submodules/dagflow
+++ b/submodules/dagflow
@@ -1 +1 @@
-Subproject commit 3360a76aa6d894c5240216dda94f8d9db1405f3e
+Subproject commit 1491f811cb0dd5417883472a8c1340b8a1e77833