diff --git a/README.md b/README.md
index ede7d66..8f801ce 100644
--- a/README.md
+++ b/README.md
@@ -136,6 +136,7 @@ pio lib install "adafruit/DHT sensor library@^1.4.4"
 
 * [ArduinoJson](https://github.com/bblanchon/ArduinoJson)
 * [SoftwareSerial](https://www.arduino.cc/en/Reference.SoftwareSerial)
+* [DHT sensor library](https://github.com/adafruit/DHT-sensor-library) - For DHT22 temperature/humidity sensor
 
 Cloud Infrastructure
 =====
diff --git a/platformio.ini b/platformio.ini
index 078852d..bed0dac 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,6 +18,7 @@ default_envs = uno, esp32
 ; Arduino Uno Environment - Phase 1: Embedded ML
 ; ============================================================================
 [env:uno]
+
 platform = atmelavr
 board = uno
 framework = arduino
@@ -27,6 +28,7 @@ build_src_filter = +<*> -<main_legacy.cpp>
 lib_deps = 
     bblanchon/ArduinoJson@^6.21.2
     adafruit/DHT sensor library@^1.4.4
+    adafruit/Adafruit Unified Sensor@^1.1.14
 
 ; Monitor settings
 monitor_speed = 9600
@@ -99,4 +101,4 @@ platform = espressif32
 board = esp32dev
 framework = arduino
 test_filter = test_esp32
-lib_deps = ${env:esp32.lib_deps}
\ No newline at end of file
+lib_deps = ${env:esp32.lib_deps}