diff --git a/canvasblocker.xpi b/canvasblocker.xpi
index 2575fe0..89abdf0 100644
Binary files a/canvasblocker.xpi and b/canvasblocker.xpi differ
diff --git a/data/inject.js b/data/inject.js
index bac2baa..b3e8544 100644
--- a/data/inject.js
+++ b/data/inject.js
@@ -74,6 +74,10 @@
 				}
 				return imageData;
 			}
+		},
+		readPixels: {
+			mode: blockMode.readAPI,
+			object: unsafeWindow.WebGLRenderingContext
 		}
 	};