diff --git a/.gitignore b/.gitignore
index 7d5fa88a..d5d1fd40 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,9 @@ include/libopencm3/**/nvic.h
 include/libopencm3/**/**/nvic.h
 lib/**/vector_nvic.c
 lib/**/**/vector_nvic.c
+include/libopencmsis/efm32/
+include/libopencmsis/lm3s/
+include/libopencmsis/lpc13xx/
+include/libopencmsis/lpc17xx/
+include/libopencmsis/lpc43xx/
+include/libopencmsis/stm32/