diff --git a/ci_test_config.h b/ci_test_config.h
index 193ac02..a09561d 100644
--- a/ci_test_config.h
+++ b/ci_test_config.h
@@ -16,7 +16,7 @@
 #ifndef CI_TEST_CONFIG_H
 #define CI_TEST_CONFIG_H
 
-#include "utest_serial.h"
+#include "utest_print.h"
 
 #if defined(MBED_CONF_APP_DEBUG_MSG) && (MBED_CONF_APP_DEBUG_MSG != 0)
 #define DEBUG_PRINTF(...) do { utest_printf(__VA_ARGS__); } while(0)
diff --git a/mbed-os.lib b/mbed-os.lib
index bc4e5b7..9a97f6c 100644
--- a/mbed-os.lib
+++ b/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#a8d1d26fa76a27263cc9a69f65df45e3458517a5
+https://github.com/ARMmbed/mbed-os/#64853b354fa188bfe8dbd51e78771213c7ed37f7