diff --git a/esphome/components/ota/ota_backend_esp_idf.cpp b/esphome/components/ota/ota_backend_esp_idf.cpp
index fbc5c09a39..2952cc3b12 100644
--- a/esphome/components/ota/ota_backend_esp_idf.cpp
+++ b/esphome/components/ota/ota_backend_esp_idf.cpp
@@ -6,6 +6,7 @@
 
 #include <esp_ota_ops.h>
 #include <esp_task_wdt.h>
+#include <cstring>
 
 #if ESP_IDF_VERSION_MAJOR >= 5
 #include <spi_flash_mmap.h>