diff --git a/addons/addon-webgl/src/GlyphRenderer.ts b/addons/addon-webgl/src/GlyphRenderer.ts
index 46b8efeb9..7a7e98496 100644
--- a/addons/addon-webgl/src/GlyphRenderer.ts
+++ b/addons/addon-webgl/src/GlyphRenderer.ts
@@ -137,6 +137,7 @@ export class GlyphRenderer extends Disposable {
 
     // Create and set the vertex array object
     this._vertexArrayObject = gl.createVertexArray();
+    this._register(toDisposable(() => gl.deleteVertexArray(this._vertexArrayObject)));
     gl.bindVertexArray(this._vertexArrayObject);
 
     // Setup a_unitquad, this defines the 4 vertices of a rectangle
diff --git a/addons/addon-webgl/src/RectangleRenderer.ts b/addons/addon-webgl/src/RectangleRenderer.ts
index 81e129e5c..b2225de3a 100644
--- a/addons/addon-webgl/src/RectangleRenderer.ts
+++ b/addons/addon-webgl/src/RectangleRenderer.ts
@@ -103,6 +103,7 @@ export class RectangleRenderer extends Disposable {
 
     // Create and set the vertex array object
     this._vertexArrayObject = gl.createVertexArray();
+    this._register(toDisposable(() => gl.deleteVertexArray(this._vertexArrayObject)));
     gl.bindVertexArray(this._vertexArrayObject);
 
     // Setup a_unitquad, this defines the 4 vertices of a rectangle
diff --git a/addons/addon-webgl/src/Types.ts b/addons/addon-webgl/src/Types.ts
index 67c9408d6..b3c51e842 100644
--- a/addons/addon-webgl/src/Types.ts
+++ b/addons/addon-webgl/src/Types.ts
@@ -28,7 +28,8 @@ export interface ICursorRenderModel {
 export interface IWebGL2RenderingContext extends WebGLRenderingContext {
   vertexAttribDivisor(index: number, divisor: number): void;
   createVertexArray(): IWebGLVertexArrayObject;
-  bindVertexArray(vao: IWebGLVertexArrayObject): void;
+  deleteVertexArray(vao: IWebGLVertexArrayObject | null): void;
+  bindVertexArray(vao: IWebGLVertexArrayObject | null): void;
   drawElementsInstanced(mode: number, count: number, type: number, offset: number, instanceCount: number): void;
 }