diff --git a/.gitmodules b/.gitmodules
index 8ef02f6e..d9c1b2dd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "rfc6234"]
 	path = rfc6234
-	url = https://github.com/massar/rfc6234
+	url = https://code.massars.net/~jeroen/rfc6234.git
 [submodule "BLAKE2"]
 	path = BLAKE2
 	url = https://github.com/BLAKE2/BLAKE2