diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index cb61749082..2fd1e40e9f 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -655,16 +655,6 @@ Style/RedundantFreeze:
   Exclude:
     - 'app/helpers/blacklight/render_partials_helper_behavior.rb'
 
-# Offense count: 5
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, AllowInnerSlashes.
-# SupportedStyles: slashes, percent_r, mixed
-Style/RegexpLiteral:
-  Exclude:
-    - 'app/views/catalog/_document.atom.builder'
-    - 'spec/helpers/blacklight/url_helper_behavior_spec.rb'
-    - 'spec/views/catalog/_thumbnail.html.erb_spec.rb'
-
 # Offense count: 7
 # Cop supports --auto-correct.
 # Configuration parameters: EnforcedStyle.
diff --git a/app/views/catalog/_document.atom.builder b/app/views/catalog/_document.atom.builder
index 1d97d67066..c87a71065d 100644
--- a/app/views/catalog/_document.atom.builder
+++ b/app/views/catalog/_document.atom.builder
@@ -2,22 +2,21 @@
 
 xml.entry do
   xml.title index_presenter(document).label(document_show_link_field(document))
-  
+
   # updated is required, for now we'll just set it to now, sorry
   xml.updated Time.current.iso8601
-  
+
   xml.link    "rel" => "alternate", "type" => "text/html", "href" => polymorphic_url(url_for_document(document))
   # add other doc-specific formats, atom only lets us have one per
   # content type, so the first one in the list wins.
-  xml << show_presenter(document).link_rel_alternates(unique: true)      
-  
+  xml << show_presenter(document).link_rel_alternates(unique: true)
+
   xml.id polymorphic_url(url_for_document(document))
-  
-  
+
   if document.to_semantic_values.key? :author
     xml.author { xml.name(document.to_semantic_values[:author].first) }
   end
-  
+
   with_format("html") do
     xml.summary "type" => "html" do
       xml.text! render_document_partial(document,
@@ -25,23 +24,23 @@ xml.entry do
       document_counter: document_counter)
     end
   end
-  
-  #If they asked for a format, give it to them. 
+
+  #If they asked for a format, give it to them.
   if (params["content_format"] &&
     document.export_formats[params["content_format"].to_sym])
-    
+
     type = document.export_formats[params["content_format"].to_sym][:content_type]
-    
+
     xml.content type: type do |content_element|
       data = document.export_as(params["content_format"])
-      
+
       # encode properly. See:
       # http://tools.ietf.org/html/rfc4287#section-4.1.3.3
       type = type.downcase
-      if (type.downcase =~ /\+|\/xml$/)
-        # xml, just put it right in              
+      if (type.downcase =~ %r{\+|/xml$})
+        # xml, just put it right in
         content_element << data
-      elsif (type.downcase =~ /text\//)
+      elsif (type.downcase =~ %r{text/})
         # text, escape
         content_element.text! data
       else
@@ -49,6 +48,6 @@ xml.entry do
         content_element << Base64.encode64(data)
       end
     end
-    
+
   end
 end
diff --git a/spec/helpers/blacklight/url_helper_behavior_spec.rb b/spec/helpers/blacklight/url_helper_behavior_spec.rb
index 31704f3ad9..6d0f1433c0 100644
--- a/spec/helpers/blacklight/url_helper_behavior_spec.rb
+++ b/spec/helpers/blacklight/url_helper_behavior_spec.rb
@@ -85,7 +85,7 @@
       allow(helper).to receive(:current_search_session).and_return double(query_params: bookmarks_query_params)
       tag = helper.link_back_to_catalog
       expect(tag).to match /Back to Bookmarks/
-      expect(tag).to match /\/bookmarks/
+      expect(tag).to match %r{/bookmarks}
     end
 
     context "with a search context" do
@@ -152,7 +152,7 @@
       allow(helper).to receive_messages(params: parameter_class.new)
       tag = helper.link_to_query(query)
       expect(tag).to match /q=#{query}/
-      expect(tag).to match />#{query}<\/a>/
+      expect(tag).to match %r{>#{query}</a>}
     end
 
     it "builds a link tag to catalog using query string and other existing params" do
diff --git a/spec/views/catalog/_thumbnail.html.erb_spec.rb b/spec/views/catalog/_thumbnail.html.erb_spec.rb
index 2f8389f20f..8165f22427 100644
--- a/spec/views/catalog/_thumbnail.html.erb_spec.rb
+++ b/spec/views/catalog/_thumbnail.html.erb_spec.rb
@@ -27,7 +27,7 @@
   it "renders the thumbnail if the document has one" do
     render partial: "catalog/thumbnail", locals: { document: document_with_thumbnail_field, document_counter: 1 }
     expect(rendered).to match /document-thumbnail/
-    expect(rendered).to match /src="http:\/\/localhost\/logo.png"/
+    expect(rendered).to match %r{src="http://localhost/logo.png"}
   end
 
   it "does not render a thumbnail if the document does not have one" do