diff --git a/platformio.ini b/platformio.ini
index 73153c72..02de03de 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -76,8 +76,10 @@ board = esp32dev
 ;default_envs = usb
 
 ; upload firmware to a jfrog bintray repository
-default_envs = ota
+;default_envs = ota
 
+default_envs = dev
+build_cache_dir = /tmp/platformio-shared-cache
 description = Paxcounter is a proof-of-concept ESP32 device for metering passenger flows in realtime. It counts how many mobile devices are around.
 
 [common]
@@ -91,7 +93,6 @@ otakeyfile = ota.conf
 lorakeyfile = loraconf.h
 lmicconfigfile = lmic_config.h
 platform_espressif32 = espressif32@1.9.0
-;platform_espressif32 = https://github.com/platformio/platform-espressif32.git#develop
 board_build.partitions = min_spiffs.csv
 monitor_speed = 115200
 upload_speed = 921600
@@ -152,4 +153,11 @@ monitor_speed = ${common.monitor_speed}
 upload_protocol = custom
 
 [env:usb]
-upload_protocol = esptool
\ No newline at end of file
+upload_protocol = esptool
+
+[env:dev]
+upload_protocol = esptool
+platform = https://github.com/platformio/platform-espressif32.git#develop
+platform_packages =
+  ; use upstream Git version
+  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git
\ No newline at end of file