diff --git a/.gitmodules b/.gitmodules
index 664e32c59..c0e6eef03 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -110,3 +110,6 @@
 [submodule "lib/FreeRTOS-Kernel"]
 	path = lib/FreeRTOS-Kernel
 	url = https://github.com/FreeRTOS/FreeRTOS-Kernel.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..202852626
--- /dev/null
+++ b/lib/CMSIS_5
@@ -0,0 +1 @@
+Subproject commit 20285262657d1b482d132d20d755c8c330d55c1f