diff --git a/spec/jekyll-feed_spec.rb b/spec/jekyll-feed_spec.rb
index d153df4a..855db834 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
@@ -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