diff --git a/.gitmodules b/.gitmodules
index d1a282c..a21d32b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "libopencm3"]
 	path = libopencm3
-	url = https://github.com/libopencm3/libopencm3.git
+	url = https://git.osmocom.org/libopencm3/
 	branch = master
 [submodule "librfn"]
 	path = librfn