diff --git a/.gitmodules b/.gitmodules
index 0b6634f..3eb96e1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "extern/quicly"]
 	path = extern/quicly
-	url = https://github.com/h2o/quicly.git
+	url = https://github.com/rbruenig/quicly.git