diff --git a/continuous_integration/travis/flake8_diff.sh b/continuous_integration/travis/flake8_diff.sh
index c297064392..4d92a4f44f 100755
--- a/continuous_integration/travis/flake8_diff.sh
+++ b/continuous_integration/travis/flake8_diff.sh
@@ -134,6 +134,6 @@ check_files() {
 if [[ "$MODIFIED_FILES" == "no_match" ]]; then
     echo "No file has been modified"
 else
-    check_files "$(echo "$MODIFIED_FILES" )" "--ignore=E501,E731,E12,W503 --exclude=*.sh,*.md,*.yml,*.rst,*.ipynb,*.txt,*.csv,*.vec,Dockerfile*,*.c,*.pyx,*.inc"
+    check_files "$(echo "$MODIFIED_FILES" )" "--ignore=E501,E731,E12,W503 --exclude=*.sh,*.md,*.yml,*.rst,*.ipynb,*.txt,*.csv,*.vec,Dockerfile*,*.c,*.pyx,*.inc,*.html"
 fi
 echo -e "No problem detected by flake8\n"
diff --git a/docs/src/gensim_theme/layout.html b/docs/src/gensim_theme/layout.html
index f6063d5a4f..c763ad9476 100644
--- a/docs/src/gensim_theme/layout.html
+++ b/docs/src/gensim_theme/layout.html
@@ -33,6 +33,14 @@
 
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
   <head>
+    <!-- Google Tag Manager - JD-20170831 --> 
+    <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=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-MP366CC');</script>
+    <!-- End Google Tag Manager -->
+
     <meta http-equiv="Content-Type" content="text/html; charset={{ encoding }}" />
     <meta property="description" content="Efficient topic modelling of text semantics in Python." />
     <meta property="og:title" content="gensim: topic modelling for humans" />
@@ -47,21 +55,14 @@
 
     <link rel="shortcut icon" href="{{ pathto('_static/favicon.ico', 1) }}"/>
 
-    <script type="text/javascript">
-      var _gaq = _gaq || [];
-      _gaq.push(['_setAccount', 'UA-24066335-1']);
-      _gaq.push(['_trackPageview']);
-
-      (function() {
-      var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
-      ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
-      var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
-      })();
-    </script>
-
   </head>
 
   <body>
+    <!-- Google Tag Manager (noscript) - JD-20170831 -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MP366CC"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
+
     <div id="topwrap">
       {% block header %}
       <div id="top1">
