diff --git a/spec/fixtures/db/dynamic_finders.yml b/spec/fixtures/db/dynamic_finders.yml
index 6aa8cb04..1d2a6db4 100644
--- a/spec/fixtures/db/dynamic_finders.yml
+++ b/spec/fixtures/db/dynamic_finders.yml
@@ -51,6 +51,8 @@ wordpress:
     files:
     - wp-includes/js/wp-embed.min.js
     - wp-includes/js/wp-embed.js
+    - wp-includes/css/dist/block-library/style.min.css
+    - wp-includes/css/dist/block-library/style.css
     - wp-includes/css/dashicons.min.css
     - wp-includes/css/dashicons.css
     - wp-includes/js/comment-reply.min.js
@@ -61,6 +63,8 @@ wordpress:
     class: QueryParameter
     xpath: //link[contains(@href,"wp-includes/")]/@href|//script[contains(@src,"wp-includes/")]/@src
     files:
+    - wp-includes/css/dist/block-library/theme.min.css
+    - wp-includes/css/dist/block-library/theme.css
     - wp-includes/css/buttons.min.css
     - wp-includes/css/buttons.css
     - wp-includes/css/admin-bar.min.css
diff --git a/spec/fixtures/dynamic_finders/expected.yml b/spec/fixtures/dynamic_finders/expected.yml
index 0bc8f168..03ee7f94 100644
--- a/spec/fixtures/dynamic_finders/expected.yml
+++ b/spec/fixtures/dynamic_finders/expected.yml
@@ -52,6 +52,7 @@ wordpress:
     confidence: 100
     interesting_entries:
     - http://wp.lab/wp-includes/js/wp-embed.min.js?ver=3.8.1
+    - http://wp.lab/wp-includes/css/dist/block-library/style.min.css?ver=3.8.1
     - http://wp.lab/wp-includes/css/dashicons.min.css?ver=3.8.1
     - http://wp.lab/wp-includes/js/comment-reply.min.js?ver=3.8.1
   CommonWpIncludesQueryParameterInHomepage:
@@ -73,6 +74,7 @@ wordpress:
     - http://wp.lab/wp-includes/js/mediaelement/wp-playlist.min.js?ver=3.8.1
     - http://wp.lab/wp-includes/js/wp-ajax-response.min.js?ver=3.8.1
     - http://wp.lab/wp-includes/css/wp-pointer.min.css?ver=3.8.1
+    - http://wp.lab/wp-includes/css/dist/block-library/theme.min.css?ver=3.8.1
   #PluginAndThemeQueryParameterInHomepage:
   #  number: 3.8.1
   #  found_by: Plugin And Theme Query Parameter In Homepage (Passive Detection)
diff --git a/spec/fixtures/dynamic_finders/wp_version/query_parameter_passive_all.html b/spec/fixtures/dynamic_finders/wp_version/query_parameter_passive_all.html
index 4670ae3c..dcb6dde1 100644
--- a/spec/fixtures/dynamic_finders/wp_version/query_parameter_passive_all.html
+++ b/spec/fixtures/dynamic_finders/wp_version/query_parameter_passive_all.html
@@ -1,6 +1,7 @@
 
 <!-- Most Common wp-includes -->
 <script type="text/javascript" src="http://wp.lab/wp-includes/js/wp-embed.min.js?ver=3.8.1"></script>
+<link rel='stylesheet' id='wp-block-library-css'  href='http://wp.lab/wp-includes/css/dist/block-library/style.min.css?ver=3.8.1' type='text/css' media='all' />
 <link rel='stylesheet' id='dashicons-css'  href='wp-includes/css/dashicons.min.css?ver=3.8.1' type='text/css' media='all' />
 <link rel='stylesheet' id='buttons-css'  href='//wp.lab/wp-includes/css/buttons.min.css?ver=3.8.1' type='text/css' media='all' />
 <link rel='stylesheet' id='buttons-css'  href='//wp.lab/wp-includes/css/buttons.css?ver=3.8.1' type='text/css' media='all' />
@@ -29,4 +30,5 @@
 <script type='text/javascript' src='http://wp.lab/wp-includes/js/mediaelement/wp-playlist.min.js?ver=3.8.1'></script>
 <script type='text/javascript' src='http://wp.lab/wp-includes/js/wp-ajax-response.min.js?ver=3.8.1'></script>
 <link rel='stylesheet' id='wp-pointer-css'  href='http://wp.lab/wp-includes/css/wp-pointer.min.css?ver=3.8.1' type='text/css' media='all' />
+<link rel='stylesheet' id ='' href='http://wp.lab/wp-includes/css/dist/block-library/theme.min.css?ver=3.8.1' type='text/css' media='all' />