diff --git a/core/mbedtls.lib b/core/mbedtls.lib
index 2b36566c3d..4412df7c26 100644
--- a/core/mbedtls.lib
+++ b/core/mbedtls.lib
@@ -1 +1 @@
-https://developer.mbed.org/teams/sandbox/code/mbedtls/#dee5972f341f
+https://developer.mbed.org/teams/sandbox/code/mbedtls/#bef26f687287