diff --git a/core.lib b/core.lib
index a0cc5a2178..60718a9848 100644
--- a/core.lib
+++ b/core.lib
@@ -1 +1 @@
-https://github.com/mbedmicro/mbed/#3fa9ed79a5a7511a6d6c3fa54b35f370157ae7bd
+https://github.com/mbedmicro/mbed/#9473d446ea5d100e67f4335ccea7166a94248c89