diff --git a/cores/esp32/esp32-hal-misc.c b/cores/esp32/esp32-hal-misc.c
index cf8edcf279f..5b193d7a494 100644
--- a/cores/esp32/esp32-hal-misc.c
+++ b/cores/esp32/esp32-hal-misc.c
@@ -191,8 +191,8 @@ BaseType_t xTaskCreateUniversal(
 #endif
 }
 
-unsigned long ARDUINO_ISR_ATTR micros() {
-  return (unsigned long)(esp_timer_get_time());
+unsigned long long ARDUINO_ISR_ATTR micros() {
+  return (unsigned long long)(esp_timer_get_time());
 }
 
 unsigned long ARDUINO_ISR_ATTR millis() {
@@ -203,7 +203,7 @@ void delay(uint32_t ms) {
   vTaskDelay(ms / portTICK_PERIOD_MS);
 }
 
-void ARDUINO_ISR_ATTR delayMicroseconds(uint32_t us) {
+void ARDUINO_ISR_ATTR delayMicroseconds(uint64_t us) {
   uint64_t m = (uint64_t)esp_timer_get_time();
   if (us) {
     uint64_t e = (m + us);
diff --git a/cores/esp32/esp32-hal.h b/cores/esp32/esp32-hal.h
index 60350ae960b..c83bf17bb1d 100644
--- a/cores/esp32/esp32-hal.h
+++ b/cores/esp32/esp32-hal.h
@@ -121,10 +121,10 @@ BaseType_t xTaskCreateUniversal(
   TaskHandle_t *const pxCreatedTask, const BaseType_t xCoreID
 );
 
-unsigned long micros();
+unsigned long long micros();
 unsigned long millis();
 void delay(uint32_t);
-void delayMicroseconds(uint32_t us);
+void delayMicroseconds(uint64_t us);
 
 #if !CONFIG_ESP32_PHY_AUTO_INIT
 void arduino_phy_init();