diff --git a/spec/jekyll-feed_spec.rb b/spec/jekyll-feed_spec.rb
index d153df4a..845c54f1 100644
--- a/spec/jekyll-feed_spec.rb
+++ b/spec/jekyll-feed_spec.rb
@@ -43,16 +43,16 @@
   end
 
   it "puts all the posts in the feed.xml file" do
-    expect(contents).to match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
-    expect(contents).to match %r!http://example.org/news/2014/03/02/march-the-second.html!
-    expect(contents).to match %r!http://example.org/news/2013/12/12/dec-the-second.html!
+    expect(contents).to match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
+    expect(contents).to match %r!http://example\.org/news/2014/03/02/march-the-second\.html!
+    expect(contents).to match %r!http://example\.org/news/2013/12/12/dec-the-second\.html!
     expect(contents).to match "http://example.org/2015/08/08/stuck-in-the-middle.html"
-    expect(contents).to_not match %r!http://example.org/2016/02/09/a-draft.html!
+    expect(contents).to_not match %r!http://example\.org/2016/02/09/a-draft\.html!
   end
 
   it "does not include assets or any static files that aren't .html" do
-    expect(contents).not_to match %r!http://example.org/images/hubot.png!
-    expect(contents).not_to match %r!http://example.org/feeds/atom.xml!
+    expect(contents).not_to match %r!http://example\.org/images/hubot\.png!
+    expect(contents).not_to match %r!http://example\.org/feeds/atom\.xml!
   end
 
   it "preserves linebreaks in preformatted text in posts" do
@@ -60,7 +60,7 @@
   end
 
   it "supports post author name as an object" do
-    expect(contents).to match %r!<author>\s*<name>Ben</name>\s*<email>ben@example.com</email>\s*<uri>http://ben.balter.com</uri>\s*</author>!
+    expect(contents).to match %r!<author>\s*<name>Ben</name>\s*<email>ben@example\.com</email>\s*<uri>http://ben\.balter.com</uri>\s*</author>!
   end
 
   it "supports post author name as a string" do
@@ -72,7 +72,7 @@
   end
 
   it "does use author reference with data from _data/authors.yml" do
-    expect(contents).to match %r!<author>\s*<name>Garth</name>\s*<email>example@mail.com</email>\s*<uri>http://garthdb.com</uri>\s*</author>!
+    expect(contents).to match %r!<author>\s*<name>Garth</name>\s*<email>example@mail\.com</email>\s*<uri>http://garthdb\.com</uri>\s*</author>!
   end
 
   it "converts markdown posts to HTML" do
@@ -84,7 +84,7 @@
   end
 
   it "replaces newlines in posts to spaces" do
-    expect(contents).to match %r!<title type="html">The plugin will properly strip newlines.</title>!
+    expect(contents).to match %r!<title type="html">The plugin will properly strip newlines\.</title>!
   end
 
   it "renders Liquid inside posts" do
@@ -159,7 +159,7 @@
       end
 
       it "renders the feed meta" do
-        expected = %r!<link href="http://example.org/" rel="alternate" type="text/html" hreflang="#{lang}" />!
+        expected = %r!<link href="http://example\.org/" rel="alternate" type="text/html" hreflang="#{lang}" />!
         expect(contents).to match(expected)
       end
     end
@@ -239,9 +239,9 @@
     end
 
     it "correctly adds the baseurl to the posts" do
-      expect(contents).to match %r!http://example.org/bass/updates/2014/03/04/march-the-fourth.html!
-      expect(contents).to match %r!http://example.org/bass/news/2014/03/02/march-the-second.html!
-      expect(contents).to match %r!http://example.org/bass/news/2013/12/12/dec-the-second.html!
+      expect(contents).to match %r!http://example\.org/bass/updates/2014/03/04/march-the-fourth\.html!
+      expect(contents).to match %r!http://example\.org/bass/news/2014/03/02/march-the-second\.html!
+      expect(contents).to match %r!http://example\.org/bass/news/2013/12/12/dec-the-second\.html!
     end
 
     it "renders the feed meta" do
@@ -344,18 +344,18 @@
       let(:news_feed) { File.read(dest_dir("feed/news.xml")) }
 
       it "outputs the primary feed" do
-        expect(contents).to match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
-        expect(contents).to match %r!http://example.org/news/2014/03/02/march-the-second.html!
-        expect(contents).to match %r!http://example.org/news/2013/12/12/dec-the-second.html!
+        expect(contents).to match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
+        expect(contents).to match %r!http://example\.org/news/2014/03/02/march-the-second\.html!
+        expect(contents).to match %r!http://example\.org/news/2013/12/12/dec-the-second\.html!
         expect(contents).to match "http://example.org/2015/08/08/stuck-in-the-middle.html"
-        expect(contents).to_not match %r!http://example.org/2016/02/09/a-draft.html!
+        expect(contents).to_not match %r!http://example\.org/2016/02/09/a-draft\.html!
       end
 
       it "outputs the category feed" do
         expect(news_feed).to match "<title type=\"html\">My awesome site | News</title>"
-        expect(news_feed).to match %r!http://example.org/news/2014/03/02/march-the-second.html!
-        expect(news_feed).to match %r!http://example.org/news/2013/12/12/dec-the-second.html!
-        expect(news_feed).to_not match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
+        expect(news_feed).to match %r!http://example\.org/news/2014/03/02/march-the-second\.html!
+        expect(news_feed).to match %r!http://example\.org/news/2013/12/12/dec-the-second\.html!
+        expect(news_feed).to_not match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
         expect(news_feed).to_not match "http://example.org/2015/08/08/stuck-in-the-middle.html"
       end
     end
@@ -375,18 +375,18 @@
       let(:news_feed) { File.read(dest_dir("feed/news.xml")) }
 
       it "outputs the primary feed" do
-        expect(contents).to match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
-        expect(contents).to match %r!http://example.org/news/2014/03/02/march-the-second.html!
-        expect(contents).to match %r!http://example.org/news/2013/12/12/dec-the-second.html!
+        expect(contents).to match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
+        expect(contents).to match %r!http://example\.org/news/2014/03/02/march-the-second\.html!
+        expect(contents).to match %r!http://example\.org/news/2013/12/12/dec-the-second\.html!
         expect(contents).to match "http://example.org/2015/08/08/stuck-in-the-middle.html"
-        expect(contents).to_not match %r!http://example.org/2016/02/09/a-draft.html!
+        expect(contents).to_not match %r!http://example\.org/2016/02/09/a-draft\.html!
       end
 
       it "outputs the category feed" do
         expect(news_feed).to match "<title type=\"html\">My awesome site | News</title>"
-        expect(news_feed).to match %r!http://example.org/news/2014/03/02/march-the-second.html!
-        expect(news_feed).to match %r!http://example.org/news/2013/12/12/dec-the-second.html!
-        expect(news_feed).to_not match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
+        expect(news_feed).to match %r!http://example\.org/news/2014/03/02/march-the-second\.html!
+        expect(news_feed).to match %r!http://example\.org/news/2013/12/12/dec-the-second\.html!
+        expect(news_feed).to_not match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
         expect(news_feed).to_not match "http://example.org/2015/08/08/stuck-in-the-middle.html"
       end
     end
@@ -411,7 +411,7 @@
         expect(collection_feed).to match "<title type=\"html\">My awesome site | Collection</title>"
         expect(collection_feed).to match "http://example.org/collection/2018-01-01-collection-doc.html"
         expect(collection_feed).to match "http://example.org/collection/2018-01-02-collection-category-doc.html"
-        expect(collection_feed).to_not match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
+        expect(collection_feed).to_not match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
         expect(collection_feed).to_not match "http://example.org/2015/08/08/stuck-in-the-middle.html"
       end
     end
@@ -439,7 +439,7 @@
         expect(news_feed).to match "<title type=\"html\">My awesome site | Collection | News</title>"
         expect(news_feed).to match "http://example.org/collection/2018-01-02-collection-category-doc.html"
         expect(news_feed).to_not match "http://example.org/collection/2018-01-01-collection-doc.html"
-        expect(news_feed).to_not match %r!http://example.org/updates/2014/03/04/march-the-fourth.html!
+        expect(news_feed).to_not match %r!http://example\.org/updates/2014/03/04/march-the-fourth\.html!
         expect(news_feed).to_not match "http://example.org/2015/08/08/stuck-in-the-middle.html"
       end
     end