diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a2d311..567ebff 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,6 +3,7 @@ name: Build
 on:
   push:
     branches: [main]
+    tags: ["v*"]
   pull_request:
 
 concurrency:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1804350..92616a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,10 @@
 # Changelog
 
-## Unreleased
+## 3.0.1
 
-No unreleased changes.
+- Build and test against the Arduino 3-compatible pioarduino ESP32 platform.
+- Enable the integer overload expected by Arduino-ESP32 3 while preserving the
+  existing ArduinoHA public API.
 
 ## 3.0.0
 
diff --git a/README.md b/README.md
index 7b79730..b950bc3 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ Read [Getting started](docs/getting-started.md) before copying this into product
 
 ```ini
 lib_deps =
-    home-assistant-integration=https://github.com/alexhopeoconnor/arduino-home-assistant.git#v3.0.0
+    home-assistant-integration=https://github.com/alexhopeoconnor/arduino-home-assistant.git#v3.0.1
 ```
 
 PlatformIO clones the Git repository and checks out the ref after `#`; that ref is a release tag, not a GitHub Release asset. Arduino IDE is supported through the included [`library.properties`](library.properties); see [Getting started](docs/getting-started.md#install-the-library).
diff --git a/docs/getting-started.md b/docs/getting-started.md
index f3de569..710bc69 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -11,7 +11,7 @@ ArduinoHA talks to Home Assistant over **MQTT** (TCP). You need an MQTT broker r
 
 ```ini
 lib_deps =
-    home-assistant-integration=https://github.com/alexhopeoconnor/arduino-home-assistant.git#v3.0.0
+    home-assistant-integration=https://github.com/alexhopeoconnor/arduino-home-assistant.git#v3.0.1
 ```
 
 **Arduino IDE:** this fork is not indexed by Library Manager. Download the
diff --git a/library.json b/library.json
index ded5488..aed04b1 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "home-assistant-integration",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "description": "Maintained Home Assistant MQTT discovery and entity integration for Arduino and ESP devices.",
   "keywords": [
     "mqtt",
diff --git a/platformio.ini b/platformio.ini
index 8f41a67..fd35c73 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -32,7 +32,7 @@ board = d1_mini
 
 [env:esp32]
 extends = common
-platform = espressif32@6.13.0
+platform = https://github.com/pioarduino/platform-espressif32/releases/download/51.03.05/platform-espressif32.zip
 board = esp32dev
 build_unflags = -std=gnu++11
 build_flags = ${common.build_flags} -std=gnu++14
diff --git a/src/ArduinoHADefines.h b/src/ArduinoHADefines.h
index 8f925f3..9e8cf13 100644
--- a/src/ArduinoHADefines.h
+++ b/src/ArduinoHADefines.h
@@ -55,7 +55,7 @@
 #endif
 
 
-#if defined(__SAMD21G18A__) or defined(__SAM3X8E__)
+#if defined(__SAMD21G18A__) or defined(__SAM3X8E__) or (defined(ESP32) and defined(ESP_ARDUINO_VERSION_MAJOR) and ESP_ARDUINO_VERSION_MAJOR >= 3)
     #define ARDUINOHA_INT_OVERLOAD
 #endif