diff --git a/external/ngtcp2 b/external/ngtcp2
index 51e95c8d8..bd19d73eb 160000
--- a/external/ngtcp2
+++ b/external/ngtcp2
@@ -1 +1 @@
-Subproject commit 51e95c8d8972abd69515d9790e8fbb774262d9ea
+Subproject commit bd19d73eb949d8cdd665342ffe29e772f3103506