diff --git a/.gitmodules b/.gitmodules
index 51779cb..400b2ab 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "test-data"]
 	path = test-data
-	url = git://github.com/maxmind/MaxMind-DB.git
+	url = https://github.com/maxmind/MaxMind-DB.git