diff --git a/submodules/dagflow b/submodules/dagflow
index 1491f811cb0dd5417883472a8c1340b8a1e77833..8b551710b0bc88c5b1ae847115158100c16c8474 160000
--- a/submodules/dagflow
+++ b/submodules/dagflow
@@ -1 +1 @@
-Subproject commit 1491f811cb0dd5417883472a8c1340b8a1e77833
+Subproject commit 8b551710b0bc88c5b1ae847115158100c16c8474