diff --git a/platformio.ini b/platformio.ini
index fc426838..a2a3ab93 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -43,7 +43,7 @@ build_flags =
     -include "src/paxcounter.conf"
 
 [env:heltec]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = heltec_wifi_lora_32
 monitor_speed = 115200
@@ -54,7 +54,7 @@ build_flags =
     -include "src/hal/heltec.h"
 
 [env:ttgov1]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = esp32dev
 monitor_speed = 115200
@@ -66,7 +66,7 @@ build_flags =
     -include "src/hal/ttgov1.h"
 
 [env:ttgov2]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = esp32dev
 monitor_speed = 115200
@@ -78,7 +78,7 @@ build_flags =
     -include "src/hal/ttgov2.h"
 
 [env:ttgov21]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = esp32dev
 monitor_speed = 115200
@@ -90,7 +90,7 @@ build_flags =
     -include "src/hal/ttgov21.h"
 
 [env:fipy]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = esp32dev
 monitor_speed = 115200
@@ -102,7 +102,7 @@ build_flags =
     -include "src/hal/fipy.h"
 
 [env:lopy]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = esp32dev
 monitor_speed = 115200
@@ -114,7 +114,7 @@ build_flags =
     -include "src/hal/lopy.h"
 
 [env:lopy4]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = esp32dev
 monitor_speed = 115200
@@ -126,7 +126,7 @@ build_flags =
     -include "src/hal/lopy4.h"
 
 [env:lolin32lite]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino
 board = lolin32
 monitor_speed = 115200
@@ -138,7 +138,7 @@ build_flags =
     -include "src/hal/lolin32lite_lora.h"
 
 [env:lolin32]
-platform = espressif32
+platform = espressif32@0.12.0
 framework = arduino 
 board = lolin32
 monitor_speed = 115200