diff --git a/Dockerfile b/Dockerfile
index 067cc7b..75b85bf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ FROM alpine AS stage
 WORKDIR /app
 COPY . /app
 
-RUN apk add --update npm=12.15.0-r1
+RUN apk add --update 'npm<13.0.0'
 RUN npm install
 
 # Build aclual container
@@ -16,7 +16,7 @@ COPY . /app
 COPY --from=stage /app/node_modules /app/node_modules
 WORKDIR /app
 
-RUN apk add --update nodejs=12.15.0-r1
+RUN apk add --update 'nodejs<13.0.0'
 
 EXPOSE 80
 
diff --git a/config.js b/config.js
index 3c27c9c..a53cd76 100644
--- a/config.js
+++ b/config.js
@@ -88,6 +88,7 @@ export default {
             "/google-analytics",
             "/www.google-analytics.com",
             "/adsbygoogle",
+            "/gtag/js",
             "/googleads",
             "/log_event\\?",
             "/r/collect",
diff --git a/src/modules/mask.js b/src/modules/mask.js
index 1cea0e1..1f3def8 100644
--- a/src/modules/mask.js
+++ b/src/modules/mask.js
@@ -4,4 +4,4 @@ export const mask = (matchedString) => matchedString.replace(
 );
 export const unmask = (string) => string.replace(/\*\(([^\)]+)\)\*/g, (_, masked) =>
     Buffer.from(decodeURIComponent(masked), "base64").toString()
-)
\ No newline at end of file
+);
\ No newline at end of file
diff --git a/src/modules/proxy.js b/src/modules/proxy.js
index 8aef67d..bd4c808 100644
--- a/src/modules/proxy.js
+++ b/src/modules/proxy.js
@@ -21,7 +21,7 @@ const replaceDomainsForHost = (host) => (match, pos, str) => {
         escapedSlashes
             ? (config.proxyDomain || host).replace(/\//g, "\\/") + "\\"
             : (config.proxyDomain || host)
-    }${ config.strippedPath }/${ match }`;
+    }${ config.strippedPath }/${ mask(match) }`;
     return r;
 };
 
diff --git a/static-test/index.html b/static-test/index.html
index 9a34c63..13dcb0b 100644
--- a/static-test/index.html
+++ b/static-test/index.html
@@ -5,11 +5,15 @@
     <meta charset="UTF-8"/>
 
     <!-- Google Tag Manager Setup (a script which loads other analytics tools) -->
-    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
-    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
-    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= // Don't forget to mask and replace the URL! npm run mask www.googletagmanager.com/gtm.js?id=ABCDEFG
-    '/www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); // When you're done setting up URL forwarding, prefix /www.googletagmanager.com/... path with your proxy route (/gtm-proxy)
-    })(window,document,'script','dataLayer','GTM-XXXXXXX');</script> <!-- Replace GTM-XXXXXXX with your tag -->
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script async src="/*(d3d3Lmdvb2dsZXRhZ21hbmFnZXIuY29t)*/*(Z3RhZw)*/*(anM)*?id=UA-XXXXXXXX-X"></script>
+    <script>
+    window.dataLayer = window.dataLayer || [];
+    function gtag(){dataLayer.push(arguments);}
+    gtag('js', new Date());
+
+    gtag('config', 'UA-XXXXXXXX-X');
+    </script>
     <!-- End Google Tag Manager Setup -->
 
     <!-- OR: Plain Google Analytics Setup (just Google Analytics) -->