diff --git a/Catena4430_Sensor.ino b/Catena4430_Sensor.ino
index 80fe182..4ca992e 100644
--- a/Catena4430_Sensor.ino
+++ b/Catena4430_Sensor.ino
@@ -41,7 +41,7 @@ static_assert(
     "This sketch requires Catena-Arduino-Platform v0.21.0-5 or later"
     );
 
-constexpr std::uint32_t kAppVersion = McciCatena4430::makeVersion(1,0,0,0);
+constexpr std::uint32_t kAppVersion = McciCatena4430::makeVersion(1,2,0,1);
 constexpr std::uint32_t kDoubleResetWaitMs = 3000;
 constexpr std::uint32_t kSetDoubleResetMagic = 0xCA44301;
 constexpr std::uint32_t kClearDoubleResetMagic = 0xCA44300;