diff --git a/libopencm3 b/libopencm3
index e04f10e..ff96643 160000
--- a/libopencm3
+++ b/libopencm3
@@ -1 +1 @@
-Subproject commit e04f10e591e5d7386171c20dcc538475736211c7
+Subproject commit ff9664389bfb560145aa3b36ad8368900c57c3d8