diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
index 22e7574..0a05886 100644
--- a/include/drivers/auth/mbedtls/mbedtls_config.h
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -22,12 +22,15 @@
 /* Prevent mbed TLS from using snprintf so that it can use tf_snprintf. */
 #define MBEDTLS_PLATFORM_SNPRINTF_ALT
 
+#if !ERROR_DEPRECATED
 #define MBEDTLS_PKCS1_V15
+#endif
 #define MBEDTLS_PKCS1_V21
 
 #define MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
 #define MBEDTLS_X509_CHECK_KEY_USAGE
 #define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
+#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
 
 #define MBEDTLS_ASN1_PARSE_C
 #define MBEDTLS_ASN1_WRITE_C