diff --git a/docs/coding/reverse-beeper-3.md b/docs/coding/reverse-beeper-3.md
index 634485b2..7e12d9d2 100644
--- a/docs/coding/reverse-beeper-3.md
+++ b/docs/coding/reverse-beeper-3.md
@@ -3,13 +3,13 @@
 ```blocks
 let beep = false
 beep = true
-control.runInBackground(function () {
+control.runInParallel(function () {
     motors.largeBC.setSpeed(-20)
     sensors.ultrasonic4.pauseUntil(UltrasonicSensorEvent.ObjectNear)
     motors.largeBC.stop()
     beep = false
 })
-control.runInBackground(function () {
+control.runInParallel(function () {
     while (beep) {
         if (sensors.ultrasonic4.distance() < 20) {
             music.playTone(440, sensors.ultrasonic4.distance())
diff --git a/docs/examples/core-set/puppy-labview.md b/docs/examples/core-set/puppy-labview.md
index d45c0504..140097ba 100644
--- a/docs/examples/core-set/puppy-labview.md
+++ b/docs/examples/core-set/puppy-labview.md
@@ -81,7 +81,7 @@ function IS(t: number) {
 
 function UP() {
     if (motors.largeA.angle() > -50) {
-        control.runInBackground(function () {
+        control.runInParallel(function () {
             motors.largeD.clearCounts()
             motors.largeD.setSpeed(-35);
             pauseUntil(() => motors.largeD.angle() < -25);
diff --git a/libs/base/_locales/base-jsdoc-strings.json b/libs/base/_locales/base-jsdoc-strings.json
index 3d209b44..6cbd0a28 100644
--- a/libs/base/_locales/base-jsdoc-strings.json
+++ b/libs/base/_locales/base-jsdoc-strings.json
@@ -134,7 +134,7 @@
   "control.panic": "Display an error code and stop the program.",
   "control.panic|param|code": "an error number to display. eg: 5",
   "control.reset": "Reset the device.",
-  "control.runInBackground": "Run other code in the background.",
+  "control.runInParallel": "Run other code in the parallel.",
   "control.waitForEvent": "Blocks the calling thread until the specified event is raised.",
   "control.waitMicros": "Block the current fiber for the given microseconds",
   "control.waitMicros|param|micros": "number of micro-seconds to wait. eg: 4",
diff --git a/libs/base/_locales/base-strings.json b/libs/base/_locales/base-strings.json
index 347db075..6a2455bf 100644
--- a/libs/base/_locales/base-strings.json
+++ b/libs/base/_locales/base-strings.json
@@ -25,7 +25,7 @@
   "control.onEvent|block": "on event|from %src|with value %value",
   "control.panic|block": "panic %code",
   "control.reset|block": "reset",
-  "control.runInBackground|block": "run in background",
+  "control.runInParallel|block": "run in parallel",
   "control.waitForEvent|block": "wait for event|from %src|with value %value",
   "control.waitMicros|block": "wait (µs)%micros",
   "control|block": "control",
diff --git a/libs/base/shims.d.ts b/libs/base/shims.d.ts
index 9de0837e..9e19da92 100644
--- a/libs/base/shims.d.ts
+++ b/libs/base/shims.d.ts
@@ -118,11 +118,11 @@ declare namespace control {
     function waitMicros(micros: int32): void;
 
     /**
-     * Run other code in the background.
+     * Run other code in the parallel.
      */
-    //% help=control/run-in-background blockAllowMultiple=1 afterOnStart=true
-    //% blockId="control_run_in_background" block="run in background" blockGap=8 shim=control::runInBackground
-    function runInBackground(a: () => void): void;
+    //% help=control/run-in-parallel handlerStatement=1
+    //% blockId="control_run_in_parallel" block="run in parallel" blockGap=8 shim=control::runInParallel
+    function runInParallel(a: () => void): void;
 
     /**
      * Blocks the calling thread until the specified event is raised.
diff --git a/libs/core/input.ts b/libs/core/input.ts
index 7e651800..e0290f3a 100644
--- a/libs/core/input.ts
+++ b/libs/core/input.ts
@@ -11,7 +11,7 @@ namespace sensors.internal {
 
         // This is implementation for the simulator.
 
-        control.runInBackground(() => {
+        control.runInParallel(() => {
             let prev = query()
             changeHandler(prev, prev)
             while (true) {
diff --git a/libs/core/linux.cpp b/libs/core/linux.cpp
index 3b682e5c..fc737c78 100644
--- a/libs/core/linux.cpp
+++ b/libs/core/linux.cpp
@@ -271,7 +271,7 @@ void setupThread(Action a, TValue arg = 0, void (*runner)(Thread *) = NULL, TVal
     }
 }
 
-void runInBackground(Action a) {
+void runInParallel(Action a) {
     setupThread(a);
 }
 
diff --git a/libs/music/sounds.ts b/libs/music/sounds.ts
index b7cc6c0c..b073970f 100644
--- a/libs/music/sounds.ts
+++ b/libs/music/sounds.ts
@@ -291,7 +291,7 @@ namespace music {
     export function playSoundEffect(sound: Sound) {
         if (!sound || numSoundsPlaying >= soundsLimit) return;
         numSoundsPlaying++;
-        control.runInBackground(() => {
+        control.runInParallel(() => {
             sound.play();
             numSoundsPlaying--;
         });
diff --git a/package.json b/package.json
index b95942cf..97720de9 100644
--- a/package.json
+++ b/package.json
@@ -44,8 +44,8 @@
     "webfonts-generator": "^0.4.0"
   },
   "dependencies": {
-    "pxt-common-packages": "0.15.7",
-    "pxt-core": "3.0.12"
+    "pxt-common-packages": "0.17.1",
+    "pxt-core": "3.0.14"
   },
   "scripts": {
     "test": "node node_modules/pxt-core/built/pxt.js travis"