diff --git a/.gitmodules b/.gitmodules
index 64e17a3..87a5c56 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "RaspberryIO"]
 	path = RaspberryIO
 	url = http://git.blubbfish.net/vs_librarys/RaspberryIO.git
+[submodule "Mono.Posix"]
+	path = Mono.Posix
+	url = http://git.blubbfish.net/vs_librarys/Mono.Posix.git
diff --git a/Mono.Posix b/Mono.Posix
new file mode 160000
index 0000000..749da0d
--- /dev/null
+++ b/Mono.Posix
@@ -0,0 +1 @@
+Subproject commit 749da0d8db24cd037bdfb93761d31282f361923c