diff --git a/libs/core/pins.cpp b/libs/core/pins.cpp
index f2fc4103..47eef73a 100644
--- a/libs/core/pins.cpp
+++ b/libs/core/pins.cpp
@@ -342,7 +342,7 @@ namespace pins {
     void analogPitch(int frequency, int ms) {
         // init pins if needed
         if (NULL == pitchPin) {
-            pitchPin = getPin((int)AnalogPin::P0);
+            pitchPin = getPin((int)DigitalPin::P0);
 #ifdef SOUND_MIRROR_EXTENSION
             pitchPin2 = &SOUND_MIRROR_EXTENSION;
 #endif           
diff --git a/package.json b/package.json
index 9619174f..0e5b66a9 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,6 @@
     },
     "dependencies": {
         "pxt-common-packages": "7.0.4",
-        "pxt-core": "6.0.20"
+        "pxt-core": "6.0.23"
     }
 }
diff --git a/pxtarget.json b/pxtarget.json
index 7b52e407..855dbc2e 100644
--- a/pxtarget.json
+++ b/pxtarget.json
@@ -35,6 +35,7 @@
         "deployDrives": "MINI",
         "driveName": "MINI",
         "hexMimeType": "application/x-microbit-hex",
+        "moveHexEof": true,
         "openocdScript": "source [find interface/cmsis-dap.cfg]; source [find target/nrf51.cfg]",
         "flashUsableEnd": 242688,
         "flashEnd": 242688,