diff --git a/.gitmodules b/.gitmodules
index 5742db4..9787f2b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "secp256k1"]
     path = secp256k1
     url = https://github.com/bitcoin-core/secp256k1.git
+[submodule "gio"]
+    path = gio
+    url = https://github.com/mleku/gio.git
diff --git a/gio b/gio
new file mode 160000
index 0000000..e3504ca
--- /dev/null
+++ b/gio
@@ -0,0 +1 @@
+Subproject commit e3504ca96c9a1b85218ac2b5025adb8c858df398