diff --git a/firmware/libopencm3 b/firmware/libopencm3
index 645f50ed..05bbde3f 160000
--- a/firmware/libopencm3
+++ b/firmware/libopencm3
@@ -1 +1 @@
-Subproject commit 645f50eddca3e06533a52d30bea244071c6992f1
+Subproject commit 05bbde3fece0aff3a4c3e91dbb9af1cbf3d3af00