diff --git a/platformio/platforms/teensy.py b/platformio/platforms/teensy.py
index 0f9688a3..aa2e6a8e 100644
--- a/platformio/platforms/teensy.py
+++ b/platformio/platforms/teensy.py
@@ -28,6 +28,10 @@ class TeensyPlatform(BasePlatform):
 
         "framework-arduinoteensy": {
             "default": True
+        },
+
+        "tool-teensy": {
+            "default": True
         }
     }