diff --git a/.gitmodules b/.gitmodules
index 9840b14..d433146 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -127,3 +127,6 @@
 [submodule "basic_materials"]
 	path = basic_materials
 	url = https://gitlab.com/VanessaE/basic_materials
+[submodule "biome_lib"]
+	path = biome_lib
+	url = https://gitlab.com/VanessaE/biome_lib
diff --git a/biome_lib b/biome_lib
new file mode 160000
index 0000000..10a1089
--- /dev/null
+++ b/biome_lib
@@ -0,0 +1 @@
+Subproject commit 10a108976778e1ef5640c241d625a056428ce689