diff --git a/.gitmodules b/.gitmodules
index 3e3d7e2c..e98d7700 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -3,7 +3,8 @@
 	url = https://github.com/miniupnp/miniupnp
 [submodule "contrib/db/libmdbx"]
 	path = contrib/db/libmdbx
-	url = https://github.com/leo-yuriev/libmdbx.git
+	url = https://abf.io/erthink/libmdbx.git
 [submodule "src/gui/qt-daemon/layout"]
 	path = src/gui/qt-daemon/layout
 	url = https://github.com/hyle-team/zano_ui.git
+	branch = main