diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
index dc00da7..ad39fa9 100644
--- a/include/drivers/auth/mbedtls/mbedtls_config.h
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2020, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -63,6 +63,7 @@
 #define MBEDTLS_ECDSA_C
 #define MBEDTLS_ECP_C
 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
+#define MBEDTLS_ECP_NO_INTERNAL_RNG
 #endif
 #if TF_MBEDTLS_USE_RSA
 #define MBEDTLS_RSA_C
@@ -101,6 +102,12 @@
 /* Memory buffer allocator options */
 #define MBEDTLS_MEMORY_ALIGN_MULTIPLE		8
 
+/*
+ * Prevent the use of 128-bit division which
+ * creates dependency on external libraries.
+ */
+#define MBEDTLS_NO_UDBL_DIVISION
+
 #ifndef __ASSEMBLER__
 /* System headers required to build mbed TLS with the current configuration */
 #include <stdlib.h>