diff --git a/.gitmodules b/.gitmodules
index 7a06610..062bd91 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -3,7 +3,7 @@
 	url = https://github.com/FreeRTOS/FreeRTOS-Kernel
 [submodule "contrib/lwip"]
 	path = contrib/lwip
-	url = https://git.savannah.gnu.org/git/lwip.git
+	url = gitea@egit.irs.uni-stuttgart.de:ROMEO/lwip.git
 [submodule "fsbl-compiled"]
 	path = fsbl-compiled
 	url = ../fsbl-compiled
diff --git a/contrib/lwip b/contrib/lwip
index 0a0452b..5135653 160000
--- a/contrib/lwip
+++ b/contrib/lwip
@@ -1 +1 @@
-Subproject commit 0a0452b2c39bdd91e252aef045c115f88f6ca773
+Subproject commit 5135653e68b095ba2cae63a965a55928eb5c4223