diff --git a/src/tls/utility/TLSClientMqtt.cpp b/src/tls/utility/TLSClientMqtt.cpp
index 37461816..dafacd53 100644
--- a/src/tls/utility/TLSClientMqtt.cpp
+++ b/src/tls/utility/TLSClientMqtt.cpp
@@ -60,7 +60,11 @@ void TLSClientMqtt::begin(ConnectionHandler & connection) {
    */
   (void)connection;
 #elif defined(ARDUINO_ARCH_ESP32)
-  setCACertBundle(x509_crt_bundle);
+  #if (ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4))
+    setCACertBundle(x509_crt_bundle, sizeof(x509_crt_bundle));
+  #else
+    setCACertBundle(x509_crt_bundle);
+  #endif
 #elif defined(ARDUINO_ARCH_ESP8266)
   setInsecure();
 #endif
diff --git a/src/tls/utility/TLSClientOta.cpp b/src/tls/utility/TLSClientOta.cpp
index 77096b6f..4e0d06d0 100644
--- a/src/tls/utility/TLSClientOta.cpp
+++ b/src/tls/utility/TLSClientOta.cpp
@@ -56,7 +56,11 @@ void TLSClientOta::begin(ConnectionHandler &connection) {
    */
   (void)connection;
 #elif defined(ARDUINO_ARCH_ESP32)
-  setCACertBundle(x509_crt_bundle);
+  #if (ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4))
+    setCACertBundle(x509_crt_bundle, sizeof(x509_crt_bundle));
+  #else
+    setCACertBundle(x509_crt_bundle);
+  #endif
 #elif defined(ARDUINO_ARCH_ESP8266)
   setInsecure();
 #endif