diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 292420c0e..6a6d24259 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,7 +4,7 @@ There are several ways of contributing to Sinon.JS
* Look into [issues tagged `help-wanted`](https://github.com/sinonjs/sinon/issues?q=is%3Aopen+is%3Aissue+label%3A%22Help+wanted%22)
* Help [improve the documentation](https://github.com/sinonjs/sinon/tree/master/docs) published
- at [the Sinon.JS website](http://sinonjs.org). [Documentation issues](https://github.com/sinonjs/sinon/issues?q=is%3Aopen+is%3Aissue+label%3ADocumentation).
+ at [the Sinon.JS website](https://sinonjs.org). [Documentation issues](https://github.com/sinonjs/sinon/issues?q=is%3Aopen+is%3Aissue+label%3ADocumentation).
* Help someone understand and use Sinon.JS on [Stack Overflow](https://stackoverflow.com/questions/tagged/sinon)
* Report an issue, please read instructions below
* Help with triaging the [issues](https://github.com/sinonjs/sinon/issues). The clearer they are, the more likely they are to be fixed soon.
diff --git a/README.md b/README.md
index 2e5afb277..be5dfa167 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-
-
+
+
Sinon.JS
@@ -32,11 +32,11 @@ via [npm](https://github.com/npm/npm)
$ npm install sinon
-or via sinon's browser builds available for download on the [homepage](http://sinonjs.org/releases/). There are also [npm based CDNs](http://sinonjs.org/releases#npm-cdns) one can use.
+or via sinon's browser builds available for download on the [homepage](https://sinonjs.org/releases/). There are also [npm based CDNs](https://sinonjs.org/releases#npm-cdns) one can use.
## Usage
-See the [sinon project homepage](http://sinonjs.org/) for documentation on usage.
+See the [sinon project homepage](https://sinonjs.org/) for documentation on usage.
If you have questions that are not covered by the documentation, you can [check out the `sinon` tag on Stack Overflow](https://stackoverflow.com/questions/tagged/sinon) or drop by #sinon.js on irc.freenode.net:6667.
diff --git a/docs/README.md b/docs/README.md
index 9ddb08a3a..057160dcb 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -4,7 +4,7 @@ published: false
# Docs
-This folder structure contains the markdown files that becomes the Sinon.JS documentation site published to GitHub Pages. Eventually this will replace the current site at http://sinonjs.org.
+This folder structure contains the markdown files that becomes the Sinon.JS documentation site published to GitHub Pages. Eventually this will replace the current site at https://sinonjs.org.
See [CONTRIBUTING.md](CONTRIBUTING.md) for details on contributing documentation to Sinon.JS.
diff --git a/docs/index.md b/docs/index.md
index bf4efedd4..aad4a36fa 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -14,12 +14,6 @@ To install the current release (`{{current_release}}`) of Sinon:
npm install sinon
```
-If you (for some reason) really want the old version of Sinon, head over to the [legacy docs](http://legacy.sinonjs.org/) and do:
-
-```shell
-npm install sinon@1
-```
-
## Try It Out
The following function takes a function as its argument and returns a new function. You can call the resulting function as many times as you want, but the original function will only be called once:
diff --git a/docs/release-source/release.md b/docs/release-source/release.md
index c371dd0d8..975c76c1c 100644
--- a/docs/release-source/release.md
+++ b/docs/release-source/release.md
@@ -42,10 +42,9 @@ Sinon `{{page.release_id}}` is written as [ES5.1][ES5] and requires no transpile
There should not be any issues with using Sinon `{{page.release_id}}` in newer versions of the same runtimes.
-If you need to support very old runtimes that have incomplete support for [ES5.1][ES5] you might get away with using loading [`es5-shim`][es5-shim] in your test environment. If that fails, we recommend [getting a legacy releases of Sinon][legacy-site].
+If you need to support very old runtimes that have incomplete support for [ES5.1][ES5] you might get away with using loading [`es5-shim`][es5-shim] in your test environment.
{% include docs/contribute.md %}
[ES5]: http://www.ecma-international.org/ecma-262/5.1/
[es5-shim]: https://github.com/es-shims/es5-shim
-[legacy-site]: http://legacy.sinonjs.org
diff --git a/package.json b/package.json
index 359b6f5d7..2137cd6d4 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
"name": "sinon",
"description": "JavaScript test spies, stubs and mocks.",
"version": "6.1.4",
- "homepage": "http://sinonjs.org/",
+ "homepage": "https://sinonjs.org/",
"author": "Christian Johansen",
"repository": {
"type": "git",