diff --git a/README.md b/README.md
index ee0ee2019d74af1b1d0ce11f856f798b40736081..030dd405cbe6607396d2d191c4d50cc0475154d9 100644
--- a/README.md
+++ b/README.md
@@ -94,4 +94,4 @@ Everyone interacting in Rails and its sub-projects' codebases, issue trackers, c
 
 ## License
 
-Ruby on Rails is released under the [MIT License](http://www.opensource.org/licenses/MIT).
+Ruby on Rails is released under the [MIT License](https://opensource.org/licenses/MIT).
diff --git a/actioncable/README.md b/actioncable/README.md
index 96674036736068a44f714c60465576e0ead25aa4..a060e8938ecd65dcc0134d0cf7a2c5d69a9f2a7d 100644
--- a/actioncable/README.md
+++ b/actioncable/README.md
@@ -549,7 +549,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Action Cable is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 ## Support
diff --git a/actionmailer/README.rdoc b/actionmailer/README.rdoc
index 397ebe42017d4e35d6264d1ddd5dc26bb0aca3bf..9993d3777dd0638e989af6bff8878733027751ee 100644
--- a/actionmailer/README.rdoc
+++ b/actionmailer/README.rdoc
@@ -157,7 +157,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Action Mailer is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 == Support
diff --git a/actionpack/README.rdoc b/actionpack/README.rdoc
index 0720c66cb9089175b6baaba7cb9f1a58f03c7cd1..93b2a0932a18a055a366dcfd31c6842fc011d22b 100644
--- a/actionpack/README.rdoc
+++ b/actionpack/README.rdoc
@@ -39,7 +39,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Action Pack is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 == Support
diff --git a/actionview/README.rdoc b/actionview/README.rdoc
index 7a3e5e31d00f2ca051d17d00b7d45e8ab8d670e8..d5029599b7cf949c0578a457a8e6b1f0239fac66 100644
--- a/actionview/README.rdoc
+++ b/actionview/README.rdoc
@@ -20,7 +20,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Action View is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 == Support
diff --git a/activejob/README.md b/activejob/README.md
index 8becac77539d0edb881befa02020c413975845c3..8a9a23929bb83439f1e38cce9b6b9d5067e9e494 100644
--- a/activejob/README.md
+++ b/activejob/README.md
@@ -108,7 +108,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Active Job is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 ## Support
diff --git a/activemodel/README.rdoc b/activemodel/README.rdoc
index 77f576199368e6df5bc2fd48ea3fc11f4aa4227f..772df0f8f645488865ecd87b934362015280bc4d 100644
--- a/activemodel/README.rdoc
+++ b/activemodel/README.rdoc
@@ -246,7 +246,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Active Model is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 == Support
diff --git a/activerecord/README.rdoc b/activerecord/README.rdoc
index cfbee4d6f76369e35df281e72b246d46010ff5b9..ae53ecd17749d3ef1940ba2c3eee026208c61e5b 100644
--- a/activerecord/README.rdoc
+++ b/activerecord/README.rdoc
@@ -162,7 +162,7 @@ This would also define the following accessors: <tt>Product#name</tt> and
 == Philosophy
 
 Active Record is an implementation of the object-relational mapping (ORM)
-pattern[http://www.martinfowler.com/eaaCatalog/activeRecord.html] by the same
+pattern[https://www.martinfowler.com/eaaCatalog/activeRecord.html] by the same
 name described by Martin Fowler:
 
   "An object that wraps a row in a database table or view,
@@ -199,7 +199,7 @@ Source code can be downloaded as part of the Rails project on GitHub:
 
 Active Record is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 == Support
diff --git a/activesupport/README.rdoc b/activesupport/README.rdoc
index 14ce20430317e6a5c47add9ad5fd07c4621a453f..8b47933bd22a3ce6fa5fd1e5b5f12ea2f25c6331 100644
--- a/activesupport/README.rdoc
+++ b/activesupport/README.rdoc
@@ -21,7 +21,7 @@ Source code can be downloaded as part of the Rails project on GitHub:
 
 Active Support is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 
 == Support
diff --git a/railties/RDOC_MAIN.rdoc b/railties/RDOC_MAIN.rdoc
index 654c7bae57e8bd9310e4d90d810f53886f9d57d0..6b9a24359387f877655201eb7fd96f0c4273f88f 100644
--- a/railties/RDOC_MAIN.rdoc
+++ b/railties/RDOC_MAIN.rdoc
@@ -1,7 +1,7 @@
 == Welcome to \Rails
 
 \Rails is a web-application framework that includes everything needed to create
-database-backed web applications according to the {Model-View-Controller (MVC)}[http://en.wikipedia.org/wiki/Model-view-controller] pattern.
+database-backed web applications according to the {Model-View-Controller (MVC)}[https://en.wikipedia.org/wiki/Model-view-controller] pattern.
 
 Understanding the MVC pattern is key to understanding \Rails. MVC divides your application
 into three layers, each with a specific responsibility.
@@ -70,4 +70,4 @@ to proceed. {Join us}[http://contributors.rubyonrails.org]!
 
 == License
 
-Ruby on \Rails is released under the {MIT License}[http://www.opensource.org/licenses/MIT].
+Ruby on \Rails is released under the {MIT License}[https://opensource.org/licenses/MIT].
diff --git a/railties/README.rdoc b/railties/README.rdoc
index a25658668cb9e2fe15863d331e374c47b0d1de50..2715ccac3f7af5659db22bd98fa28d74bbbd833d 100644
--- a/railties/README.rdoc
+++ b/railties/README.rdoc
@@ -23,7 +23,7 @@ Source code can be downloaded as part of the Rails project on GitHub
 
 Railties is released under the MIT license:
 
-* http://www.opensource.org/licenses/MIT
+* https://opensource.org/licenses/MIT
 
 == Support
 
@@ -38,4 +38,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-
diff --git a/railties/lib/rails/generators/rails/plugin/templates/README.md b/railties/lib/rails/generators/rails/plugin/templates/README.md
index 9d2b74416eaf15cf1778515719213259c9a5288e..1632409bea1a509ac5dc6b0cce34f6039cc3c658 100644
--- a/railties/lib/rails/generators/rails/plugin/templates/README.md
+++ b/railties/lib/rails/generators/rails/plugin/templates/README.md
@@ -25,4 +25,4 @@ $ gem install <%= name %>
 Contribution directions go here.
 
 ## License
-The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
+The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).