diff --git a/.gitmodules b/.gitmodules
index c1c5cefe7..c8f8eea97 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -28,9 +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
 [submodule "lib/CMSIS_4"]
 	path = lib/CMSIS_4
 	url = https://github.com/ARM-software/CMSIS.git
diff --git a/lib/CMSIS_5 b/lib/CMSIS_5
deleted file mode 160000
index 4a65d8801..000000000
--- a/lib/CMSIS_5
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 4a65d88011a1595b7c8b42fa0d70b7bdfc132acc