diff --git a/ePaper-ESP-IDF/sdkconfig.defaults b/ePaper-ESP-IDF/sdkconfig.defaults
index 0229d70..8a8ded0 100644
--- a/ePaper-ESP-IDF/sdkconfig.defaults
+++ b/ePaper-ESP-IDF/sdkconfig.defaults
@@ -32,6 +32,14 @@ CONFIG_LWIP_DHCP_MAX_NTP_SERVERS=1
 CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
 CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ=240
 
+#
+# TLS Key Exchange Methods
+#
+CONFIG_MBEDTLS_KEY_EXCHANGE_RSA_PSK=n
+CONFIG_MBEDTLS_KEY_EXCHANGE_RSA=n
+CONFIG_MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA=n
+CONFIG_MBEDTLS_KEY_EXCHANGE_ECDH_RSA=n
+
 #
 # Core dump
 #