diff --git a/.gitmodules b/.gitmodules
index 487cf6d8a4a..b833cadbb40 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -127,3 +127,6 @@
 [submodule "platform/innovium/sonic-platform-marvell"]
 	path = platform/innovium/sonic-platform-marvell
 	url = https://github.com/Marvell-switching/sonic-platform-marvell
+[submodule "src/sonic-stp"]
+	path = src/sonic-stp
+	url = https://github.com/Azure/sonic-stp
diff --git a/src/sonic-stp b/src/sonic-stp
new file mode 160000
index 00000000000..69b241d7688
--- /dev/null
+++ b/src/sonic-stp
@@ -0,0 +1 @@
+Subproject commit 69b241d768816507960142e494edfd5bdf5fbe04