diff --git a/.gitmodules b/.gitmodules
index 308d06c43..da141ca5f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,7 +13,9 @@
 [submodule "platform/stm32nucleo-spirit1/stm32cube-lib"]
 	path = platform/stm32nucleo-spirit1/stm32cube-lib
 	url = https://github.com/STclab/stm32nucleo-spirit1-lib
-
 [submodule "tools/sensniff"]
 	path = tools/sensniff
 	url = https://github.com/g-oikonomou/sensniff.git
+[submodule "apps/tinydtls"]
+	path = apps/tinydtls
+	url = https://github.com/iot-lab/armour-tinydtls.git
diff --git a/apps/tinydtls b/apps/tinydtls
new file mode 160000
index 000000000..e95b02584
--- /dev/null
+++ b/apps/tinydtls
@@ -0,0 +1 @@
+Subproject commit e95b02584a0041817da67c8c01f2a197d0c26915