diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..c7fa1773
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "solidity-dex"]
+	path = solidity-dex
+	url = https://github.com/AltheaFoundation/althea-dex
diff --git a/solidity-dex b/solidity-dex
new file mode 160000
index 00000000..165b7062
--- /dev/null
+++ b/solidity-dex
@@ -0,0 +1 @@
+Subproject commit 165b7062e0939dc944d423ff2c67b47d8657583a