diff --git a/BLE_BatteryLevel/mbed-os.lib b/BLE_BatteryLevel/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_BatteryLevel/mbed-os.lib
+++ b/BLE_BatteryLevel/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_Beacon/mbed-os.lib b/BLE_Beacon/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_Beacon/mbed-os.lib
+++ b/BLE_Beacon/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_Button/mbed-os.lib b/BLE_Button/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_Button/mbed-os.lib
+++ b/BLE_Button/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_EddystoneObserver/mbed-os.lib b/BLE_EddystoneObserver/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_EddystoneObserver/mbed-os.lib
+++ b/BLE_EddystoneObserver/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_EddystoneService/mbed-os.lib b/BLE_EddystoneService/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_EddystoneService/mbed-os.lib
+++ b/BLE_EddystoneService/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_GAPButton/mbed-os.lib b/BLE_GAPButton/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_GAPButton/mbed-os.lib
+++ b/BLE_GAPButton/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_HeartRate/mbed-os.lib b/BLE_HeartRate/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_HeartRate/mbed-os.lib
+++ b/BLE_HeartRate/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_LED/mbed-os.lib b/BLE_LED/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_LED/mbed-os.lib
+++ b/BLE_LED/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_LEDBlinker/mbed-os.lib b/BLE_LEDBlinker/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_LEDBlinker/mbed-os.lib
+++ b/BLE_LEDBlinker/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea
diff --git a/BLE_Thermometer/mbed-os.lib b/BLE_Thermometer/mbed-os.lib
index 053d6f84..7abaa619 100644
--- a/BLE_Thermometer/mbed-os.lib
+++ b/BLE_Thermometer/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a
+https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea