diff --git a/.gitmodules b/.gitmodules
index d6a4341d5..ef4965b5f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "artiq/runtime/lwip"]
 	path = artiq/runtime/lwip
-	url = git://git.savannah.nongnu.org/lwip.git
+	url = https://github.com/m-labs/lwip
 	ignore = untracked