diff --git a/.gitmodules b/.gitmodules
index 471bef5b..d0d86b4e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,4 +6,4 @@
 	url = https://github.com/chriskohlhoff/asio.git
 [submodule "externals/flac"]
 	path = externals/flac
-	url = git://xiph.org/flac.git
+	url = https://git.xiph.org/flac.git