diff --git a/.gitmodules b/.gitmodules
index 8cd5ea42..058a86dd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -137,3 +137,6 @@
 [submodule "mods/biome_lib"]
 	path = mods/biome_lib
 	url = https://github.com/VanessaE/biome_lib
+[submodule "mods/bitchange"]
+	path = mods/bitchange
+	url = https://git.tchncs.de/Illuna-Minetest/bitchange
diff --git a/mods/bitchange b/mods/bitchange
new file mode 160000
index 00000000..750d0f85
--- /dev/null
+++ b/mods/bitchange
@@ -0,0 +1 @@
+Subproject commit 750d0f85fc7621552fb956abe61ace335411d0c4