diff --git a/NFC_EEPROM/mbed-os.lib b/NFC_EEPROM/mbed-os.lib
index ba1d699..bc4e5b7 100644
--- a/NFC_EEPROM/mbed-os.lib
+++ b/NFC_EEPROM/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#a8f0c33eaa2c52babff9655417c36f4b5edd54d7
+https://github.com/ARMmbed/mbed-os/#a8d1d26fa76a27263cc9a69f65df45e3458517a5
diff --git a/NFC_SmartPoster/mbed-os.lib b/NFC_SmartPoster/mbed-os.lib
index ba1d699..bc4e5b7 100644
--- a/NFC_SmartPoster/mbed-os.lib
+++ b/NFC_SmartPoster/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#a8f0c33eaa2c52babff9655417c36f4b5edd54d7
+https://github.com/ARMmbed/mbed-os/#a8d1d26fa76a27263cc9a69f65df45e3458517a5