diff --git a/libs/base/pxt.json b/libs/base/pxt.json
index a6424b46..c85311cf 100644
--- a/libs/base/pxt.json
+++ b/libs/base/pxt.json
@@ -16,10 +16,8 @@
         "ns.ts",
         "control.cpp",
         "control.ts",
-        "eventcontext.ts",
-        "serial.cpp",
-        "serial.ts",
-        "fieldeditors.ts"
+        "console.ts",
+        "eventcontext.ts"
     ],
     "testFiles": [
         "test.ts"
diff --git a/libs/base/shims.d.ts b/libs/base/shims.d.ts
index 81d0b49b..bc035e08 100644
--- a/libs/base/shims.d.ts
+++ b/libs/base/shims.d.ts
@@ -142,23 +142,12 @@ declare namespace control {
     //% blockId="control_device_serial_number" block="device serial number" weight=9
     //% help=control/device-serial-number shim=control::deviceSerialNumber
     function deviceSerialNumber(): int32;
-}
-declare namespace serial {
 
     /**
-     * Write some text to the serial port.
+     *
      */
-    //% help=serial/write-string
-    //% weight=87 blockHidden=true
-    //% blockId=serial_writestring block="serial|write string %text" shim=serial::writeString
-    function writeString(text: string): void;
-
-    /**
-     * Send a buffer across the serial connection.
-     */
-    //% help=serial/write-buffer weight=6 blockHidden=true
-    //% blockId=serial_writebuffer block="serial|write buffer %buffer" shim=serial::writeBuffer
-    function writeBuffer(buffer: Buffer): void;
+    //% shim=control::__log
+    function __log(text: string): void;
 }
 
 // Auto-generated. Do not edit. Really.
diff --git a/libs/core/console.ts b/libs/core/console.ts
deleted file mode 100644
index fb768868..00000000
--- a/libs/core/console.ts
+++ /dev/null
@@ -1,48 +0,0 @@
-/// <reference no-default-lib="true"/>
-
-/**
- * Reading and writing data to the console output.
- */
-//% weight=12 color=#00451A icon="\uf112"
-//% advanced=true
-namespace console {
-    type Listener = (text: string) => void;
-
-    const listeners: Listener[] = [
-        (text: string) => serial.writeLine(text)
-    ];
-
-    /**
-     * Write a line of text to the console output.
-     * @param value to send
-     */
-    //% weight=90
-    //% help=console/log blockGap=8
-    //% blockId=console_log block="console|log %text"
-    export function log(text: string): void {
-        for (let i = 0; i < listeners.length; ++i)
-            listeners[i](text);
-    }
-
-    /**
-     * Write a name:value pair as a line of text to the console output.
-     * @param name name of the value stream, eg: "x"
-     * @param value to write
-     */
-    //% weight=88 blockGap=8
-    //% help=console/log-value
-    //% blockId=console_log_value block="console|log value %name|= %value"
-    export function logValue(name: string, value: number): void {
-        log(`${name}: ${value}`)
-    }
-
-    /**
-     * Adds a listener for the log messages
-     * @param listener 
-     */
-    //%
-    export function addListener(listener: (text: string) => void) {
-        if (!listener) return;
-        listeners.push(listener);
-    }
-}
diff --git a/libs/core/platform.h b/libs/core/platform.h
new file mode 100644
index 00000000..ff35a37e
--- /dev/null
+++ b/libs/core/platform.h
@@ -0,0 +1 @@
+// leave empty
\ No newline at end of file
diff --git a/libs/core/pxt.json b/libs/core/pxt.json
index 42b49b69..e46ecbe4 100644
--- a/libs/core/pxt.json
+++ b/libs/core/pxt.json
@@ -10,7 +10,6 @@
         "linux.cpp",
         "mmap.cpp",
         "control.cpp",
-        "console.ts",
         "timer.ts",
         "serialnumber.cpp",
         "buttons.ts",
@@ -25,7 +24,8 @@
         "enums.d.ts",
         "dal.d.ts",
         "icons.jres",
-        "ns.ts"
+        "ns.ts",
+        "platform.h"
     ],
     "testFiles": [
         "test.ts"
diff --git a/libs/screen/image.d.ts b/libs/screen/image.d.ts
new file mode 100644
index 00000000..ff35a37e
--- /dev/null
+++ b/libs/screen/image.d.ts
@@ -0,0 +1 @@
+// leave empty
\ No newline at end of file
diff --git a/package.json b/package.json
index 7f2b9d31..ca875a3a 100644
--- a/package.json
+++ b/package.json
@@ -39,8 +39,8 @@
     "webfonts-generator": "^0.4.0"
   },
   "dependencies": {
-    "pxt-common-packages": "0.23.15",
-    "pxt-core": "3.19.4"
+    "pxt-common-packages": "0.23.37",
+    "pxt-core": "3.20.5"
   },
   "scripts": {
     "test": "node node_modules/pxt-core/built/pxt.js travis"