diff --git a/script/tf-coverity/common-def.sh b/script/tf-coverity/common-def.sh
index 220d503..94644e1 100644
--- a/script/tf-coverity/common-def.sh
+++ b/script/tf-coverity/common-def.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2019-2020 Arm Limited. All rights reserved.
+# Copyright (c) 2019-2021 Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -71,7 +71,7 @@
 
 # mbed TLS source tag to checkout when building Trusted Firmware with Trusted
 # Board Boot support.
-MBED_TLS_SOURCES_TAG="mbedtls-2.24.0"
+MBED_TLS_SOURCES_TAG="mbedtls-2.25.0"
 
 ARMCLANG_PATH="$(set_armclang_toolchain)"