diff --git a/scripts/config.pl b/scripts/config.pl
index c10a3b316..1c7c736c6 100755
--- a/scripts/config.pl
+++ b/scripts/config.pl
@@ -32,6 +32,8 @@
 #   MBEDTLS_REMOVE_3DES_CIPHERSUITES
 #   MBEDTLS_SSL_HW_RECORD_ACCEL
 #   MBEDTLS_SSL_PROTO_NO_DTLS
+#   MBEDTLS_SSL_NO_SESSION_CACHE
+#   MBEDTLS_SSL_NO_SESSION_RESUMPTION
 #   MBEDTLS_RSA_NO_CRT
 #   MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
 #   MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
@@ -95,6 +97,8 @@ MBEDTLS_REMOVE_ARC4_CIPHERSUITES
 MBEDTLS_REMOVE_3DES_CIPHERSUITES
 MBEDTLS_SSL_HW_RECORD_ACCEL
 MBEDTLS_SSL_PROTO_NO_TLS
+MBEDTLS_SSL_NO_SESSION_CACHE
+MBEDTLS_SSL_NO_SESSION_RESUMPTION
 MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
 MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
 MBEDTLS_X509_REMOVE_INFO