diff --git a/authcrypt/mbed-os.lib b/authcrypt/mbed-os.lib
index 69fff22f3..38ad35227 100644
--- a/authcrypt/mbed-os.lib
+++ b/authcrypt/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#6a0a86538c0b9b2bfcc4583b1e2b7fea8f4e71e9
+https://github.com/ARMmbed/mbed-os/#c966348d3f9ca80843be7cdc9b748f06ea73ced0
diff --git a/benchmark/mbed-os.lib b/benchmark/mbed-os.lib
index 69fff22f3..38ad35227 100644
--- a/benchmark/mbed-os.lib
+++ b/benchmark/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#6a0a86538c0b9b2bfcc4583b1e2b7fea8f4e71e9
+https://github.com/ARMmbed/mbed-os/#c966348d3f9ca80843be7cdc9b748f06ea73ced0
diff --git a/hashing/mbed-os.lib b/hashing/mbed-os.lib
index 69fff22f3..38ad35227 100644
--- a/hashing/mbed-os.lib
+++ b/hashing/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#6a0a86538c0b9b2bfcc4583b1e2b7fea8f4e71e9
+https://github.com/ARMmbed/mbed-os/#c966348d3f9ca80843be7cdc9b748f06ea73ced0
diff --git a/tls-client/mbed-os.lib b/tls-client/mbed-os.lib
index 69fff22f3..38ad35227 100644
--- a/tls-client/mbed-os.lib
+++ b/tls-client/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#6a0a86538c0b9b2bfcc4583b1e2b7fea8f4e71e9
+https://github.com/ARMmbed/mbed-os/#c966348d3f9ca80843be7cdc9b748f06ea73ced0