diff --git a/atecc608a/mbed-os.lib b/atecc608a/mbed-os.lib
index b88a5d3..0e49128 100644
--- a/atecc608a/mbed-os.lib
+++ b/atecc608a/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#c73413893fb98aaaeda74513c981ac68adc8645d
+https://github.com/ARMmbed/mbed-os/#9738b27c7df897c29e9769911d6794ba3e5b3f19