diff --git a/README.rdoc b/README.rdoc
index f4b68d921..9dc2a0546 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -89,20 +89,20 @@ Type "rake --help" for all available options.
   5. {File Operations}[https://avdi.codes/rake-part-5-file-operations/]
   6. {Clean and Clobber}[https://avdi.codes/rake-part-6-clean-and-clobber/]
   7. {MultiTask}[https://avdi.codes/rake-part-7-multitask/]
-* {Jim Weirich's 2003 RubyConf presentation}[http://web.archive.org/web/20140221123354/http://onestepback.org/articles/buildingwithrake/]
-* Martin Fowler's article on Rake: http://martinfowler.com/articles/rake.html
+* {Jim Weirich's 2003 RubyConf presentation}[https://web.archive.org/web/20140221123354/http://onestepback.org/articles/buildingwithrake/]
+* Martin Fowler's article on Rake: https://martinfowler.com/articles/rake.html
 
 == Other Make Re-envisionings ...
 
 Rake is a late entry in the make replacement field.  Here are links to
 other projects with similar (and not so similar) goals.
 
-* http://directory.fsf.org/wiki/Bras -- Bras, one of earliest
+* https://directory.fsf.org/wiki/Bras -- Bras, one of earliest
   implementations of "make in a scripting language".
-* http://www.a-a-p.org -- Make in Python
-* http://ant.apache.org -- The Ant project
-* http://search.cpan.org/search?query=PerlBuildSystem -- The Perl Build System
-* http://www.rubydoc.info/gems/rant/0.5.7/frames -- Rant, another Ruby make tool.
+* http://http://www.a-a-p.org -- Make in Python
+* https://ant.apache.org -- The Ant project
+* https://search.cpan.org/search?query=PerlBuildSystem -- The Perl Build System
+* https://www.rubydoc.info/gems/rant/0.5.7/frames -- Rant, another Ruby make tool.
 
 == Credits