diff --git a/.gitmodules b/.gitmodules
index 58f51fb..ad0820c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,8 @@
 [submodule "libopencm3"]
 	path = libopencm3
 	url = https://github.com/libopencm3/libopencm3
+	ignore = all
 [submodule "STM32duino-bootloader"]
 	path = STM32duino-bootloader
 	url = https://github.com/rogerclarkmelbourne/STM32duino-bootloader.git
+	ignore = all