diff --git a/.gitmodules b/.gitmodules
index 0f9ad34c7..60cec00d0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -28,3 +28,6 @@
 [submodule "lib/FreeRTOS"]
 	path = lib/FreeRTOS
 	url = https://github.com/FreeRTOS/FreeRTOS.git
+[submodule "lib/CMSIS_5"]
+	path = lib/CMSIS_5
+	url = https://github.com/ARM-software/CMSIS_5.git
diff --git a/lib/CMSIS_5 b/lib/CMSIS_5
new file mode 160000
index 000000000..3ae681dae
--- /dev/null
+++ b/lib/CMSIS_5
@@ -0,0 +1 @@
+Subproject commit 3ae681dae15bfb76ca7601efad2f88834249baad