From 407661d56b818a61ced9da6970e7fdaaf1179cc3 Mon Sep 17 00:00:00 2001
From: Martin <25747549+martgras@users.noreply.github.com>
Date: Mon, 3 Jan 2022 18:19:01 +0100
Subject: [PATCH] Fix compile error for idf projects with ArduinoJson 6 (#2979)

Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>
---
 esphome/components/json/json_util.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/esphome/components/json/json_util.cpp b/esphome/components/json/json_util.cpp
index 6a4eba78ab..7e88fb6e59 100644
--- a/esphome/components/json/json_util.cpp
+++ b/esphome/components/json/json_util.cpp
@@ -4,6 +4,9 @@
 #ifdef USE_ESP8266
 #include <Esp.h>
 #endif
+#ifdef USE_ESP32
+#include <esp_heap_caps.h>
+#endif
 
 namespace esphome {
 namespace json {