diff --git a/README.md b/README.md
index 316e1b8..0b2edba 100644
--- a/README.md
+++ b/README.md
@@ -240,15 +240,15 @@ Configure Bob in a Jenkins job with shell script build step:
 Colophon
 --------
 
-[Developer's Guide](http://cliffano.github.io/developers_guide.html#nodejs)
+[Developer's Guide](https://cliffano.github.io/developers_guide.html#nodejs)
 
 Build reports:
 
-* [Code complexity report](http://cliffano.github.io/bob/complexity/plato/index.html)
-* [Unit tests report](http://cliffano.github.io/bob/test/mocha.txt)
-* [Test coverage report](http://cliffano.github.io/bob/coverage/c8/index.html)
-* [Integration tests report](http://cliffano.github.io/bob/test-integration/cmdt.txt)
-* [API Documentation](http://cliffano.github.io/bob/doc/jsdoc/index.html)
+* [Code complexity report](https://cliffano.github.io/bob/complexity/plato/index.html)
+* [Unit tests report](https://cliffano.github.io/bob/test/mocha.txt)
+* [Test coverage report](https://cliffano.github.io/bob/coverage/c8/index.html)
+* [Integration tests report](https://cliffano.github.io/bob/test-integration/cmdt.txt)
+* [API Documentation](https://cliffano.github.io/bob/doc/jsdoc/index.html)
 
 Videos: