diff --git a/README.md b/README.md
index 6147796..3eb4a05 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_1129 TILs and counting..._
+_1130 TILs and counting..._
 
 ---
 
@@ -865,6 +865,7 @@ _1129 TILs and counting..._
 - [Assert About An Object's Attributes With RSpec](ruby/assert-about-an-objects-attributes-with-rspec.md)
 - [Assoc For Hashes](ruby/assoc-for-hashes.md)
 - [Block Comments](ruby/block-comments.md)
+- [Build HTTP And HTTPS URLs](ruby/build-http-and-https-urls.md)
 - [Chaining Multiple RSpec Change Matchers](ruby/chaining-multiple-rspec-change-matchers.md)
 - [Check Return Status Of Running A Shell Command](ruby/check-return-status-of-running-a-shell-command.md)
 - [Click On Text With Capybara](ruby/click-on-text-with-capybara.md)
diff --git a/ruby/build-http-and-https-urls.md b/ruby/build-http-and-https-urls.md
new file mode 100644
index 0000000..fefe261
--- /dev/null
+++ b/ruby/build-http-and-https-urls.md
@@ -0,0 +1,47 @@
+# Build HTTP And HTTPS URLs
+
+There are two modules you can use to build URLs in Ruby. The `URI::HTTP` module
+will build URLs with the `http` protocol. And then to build URLs with the
+`https` protocol, you can reach for the `URI::HTTPS` module.
+
+We can specify just the `host` and optionally include a `port` if that is
+needed.
+
+Here is `URI::HTTP` in action.
+
+```ruby
+> URI::HTTP.build(host: 'example.com', port: 3000)
+=> #<URI::HTTP http://example.com:3000>
+
+> URI::HTTP.build(host: 'example.com', port: 3000, protocol: 'https')
+=> #<URI::HTTP http://example.com:3000>
+```
+
+Note that we can try to override the protocol, but it will be ignored.
+
+Here is the `URI::HTTPS` module.
+
+```ruby
+> URI::HTTPS.build(host: 'example.com', port: 3000)
+=> #<URI::HTTPS https://example.com:3000>
+```
+
+If we want the URL as a string, we can call `#to_s` on it.
+
+```ruby
+> URI::HTTPS.build(host: 'example.com', port: 3000).to_s
+=> "https://example.com:3000"
+```
+
+We can even include the `path`, though be sure to include the leading slash.
+
+```ruby
+> URI::HTTP.build(host: 'example.com', port: 3000, path: '/taco/bell')
+=> #<URI::HTTP http://example.com:3000/taco/bell>
+
+> URI::HTTP.build(host: 'example.com', port: 3000, path: 'taco/bell')
+URI::InvalidComponentError: bad component(expected absolute path component): taco/bell
+from /Users/jbranchaud/.asdf/installs/ruby/2.6.6/lib/ruby/2.6.0/uri/generic.rb:761:in `check_path'
+```
+
+[source](https://ruby-doc.org/stdlib-2.5.1/libdoc/uri/rdoc/URI/HTTP.html)