diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4175ed0e4..f73234b80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -120,6 +120,7 @@ The following changes took place in the Pointer class:
 * The ScaleManager full screen call had an arrow function in it. Despite being within a conditional block of code it still broke really old browsers like IE11, so has been removed. Fix #4530 (thanks @jorbascrumps @CNDW)
 * `Game.getTime` would return `NaN` because it incorrectly accessed the time value from the TimeStep.
 * Text with a `fixedWidth` or `fixedHeight` could cause the canvas to be cropped if less than the size of the Text itself (thanks @rexrainbow)
+* Changing the `radius` of an Arc Game Object wouldn't update the size, causing origin issues. It now updates the size and origin correctly in WebGL. Fix #4542 (thanks @@PhaserEditor2D)
 
 ### Examples, Documentation and TypeScript
 
diff --git a/src/gameobjects/shape/arc/Arc.js b/src/gameobjects/shape/arc/Arc.js
index 5cfb57110..09580f982 100644
--- a/src/gameobjects/shape/arc/Arc.js
+++ b/src/gameobjects/shape/arc/Arc.js
@@ -164,6 +164,8 @@ var Arc = new Class({
         {
             this.geom.radius = value;
 
+            this.setSize(value, value);
+            this.updateDisplayOrigin();
             this.updateData();
         }