diff --git a/assets/manifest.json b/assets/manifest.json
index 429c49c..ee48460 100644
--- a/assets/manifest.json
+++ b/assets/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "Ugly Email",
   "short_name": "Ugly Email",
-  "version": "4.0.1",
+  "version": "4.1.1",
   "description": "Get Back Your Email Privacy, Block Email Tracking.",
   "author": "OneClick Lab",
   "homepage_url": "http://uglyemail.com",
diff --git a/package-lock.json b/package-lock.json
index 2e7a0d3..7b090b7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,19 +1,19 @@
 {
   "name": "ugly-email-extension",
-  "version": "4.0.1",
+  "version": "4.1.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ugly-email-extension",
-      "version": "4.0.1",
+      "version": "4.1.1",
       "license": "ISC",
       "dependencies": {
-        "@types/chrome": "^0.0.262",
         "gmail-js": "^1.1.12",
         "jquery": "^4.0.0-beta"
       },
       "devDependencies": {
+        "@types/chrome": "^0.0.262",
         "@types/jest": "^26.0.19",
         "@types/jquery": "^3.5.29",
         "@typescript-eslint/eslint-plugin": "^4.9.1",
diff --git a/package.json b/package.json
index 568252c..5a6e69d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ugly-email-extension",
-  "version": "4.0.1",
+  "version": "4.1.1",
   "description": "",
   "main": "index.js",
   "scripts": {
diff --git a/src/services/trackers.ts b/src/services/trackers.ts
index 853c934..9d5acf8 100644
--- a/src/services/trackers.ts
+++ b/src/services/trackers.ts
@@ -32,7 +32,7 @@ export class Trackers {
   }
 
   match(body: string): string | null {
-    const pixel = this.identifiers.find((p) => new RegExp(p, 'g').test(body));
+    const pixel = this.identifiers.find((p) => new RegExp(p, 'gi').test(body));
     return pixel ? this.pixels.get(pixel) : null;
   }
 }