diff --git a/README.md b/README.md
index 8d366c16..83edcfb5 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
 ## Introduction
 
 ![Humorous image of software quality estimation as a count of how many expletives
-you shout when reading code](http://www.osnews.com/images/comics/wtfm.jpg)
+you shout when reading code](https://www.osnews.com/images/comics/wtfm.jpg)
 
 Software engineering principles, from Robert C. Martin's book
 [_Clean Code_](https://www.amazon.com/Clean-Code-Handbook-Software-Craftsmanship/dp/0132350882),
@@ -1830,9 +1830,9 @@ didn't break anything. Deciding on what constitutes an adequate amount is up
 to your team, but having 100% coverage (all statements and branches) is how
 you achieve very high confidence and developer peace of mind. This means that
 in addition to having a great testing framework, you also need to use a
-[good coverage tool](http://gotwarlost.github.io/istanbul/).
+[good coverage tool](https://gotwarlost.github.io/istanbul/).
 
-There's no excuse to not write tests. There are [plenty of good JS test frameworks](http://jstherightway.org/#testing-tools), so find one that your team prefers.
+There's no excuse to not write tests. There are [plenty of good JS test frameworks](https://jstherightway.org/#testing-tools), so find one that your team prefers.
 When you find one that works for your team, then aim to always write tests
 for every new feature/module you introduce. If your preferred method is
 Test Driven Development (TDD), that is great, but the main point is to just
@@ -2074,7 +2074,7 @@ getdata()
 
 Formatting is subjective. Like many rules herein, there is no hard and fast
 rule that you must follow. The main point is DO NOT ARGUE over formatting.
-There are [tons of tools](http://standardjs.com/rules.html) to automate this.
+There are [tons of tools](https://standardjs.com/rules.html) to automate this.
 Use one! It's a waste of time and money for engineers to argue over formatting.
 
 For things that don't fall under the purview of automatic formatting