diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index f8b19d1ac6..72f3b5b660 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -13,5 +13,5 @@ Examples:
 
 `chore(cli): edit README`
 
-Learn more about [Conventional Commits](http://conventionalcommits.org).
+Learn more about [Conventional Commits](https://www.conventionalcommits.org/).
 -->
diff --git a/packages/ci-v5/.gitignore b/packages/ci-v5/.gitignore
index 9a439fcd98..09af98b561 100644
--- a/packages/ci-v5/.gitignore
+++ b/packages/ci-v5/.gitignore
@@ -18,13 +18,13 @@ coverage
 # nyc test coverage
 .nyc_output
 
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
 
 # node-waf configuration
 .lock-wscript
 
-# Compiled binary addons (http://nodejs.org/api/addons.html)
+# Compiled binary addons (https://nodejs.org/api/addons.html)
 build/Release
 
 # Dependency directories
diff --git a/packages/ci-v5/CHANGELOG.md b/packages/ci-v5/CHANGELOG.md
index 594d208d7f..2777139edb 100644
--- a/packages/ci-v5/CHANGELOG.md
+++ b/packages/ci-v5/CHANGELOG.md
@@ -469,8 +469,8 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 Change Log
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](http://keepachangelog.com/)
-and this project adheres to [Semantic Versioning](http://semver.org/).
+The format is based on [Keep a Changelog](https://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](https://semver.org/).
 
 ## Unreleased
 
diff --git a/packages/git/src/git.ts b/packages/git/src/git.ts
index 1cf9b5c385..1d7a0c4e6f 100644
--- a/packages/git/src/git.ts
+++ b/packages/git/src/git.ts
@@ -15,7 +15,7 @@ export default class Git {
       return stdout.trim()
     } catch (error) {
       if (error.code === 'ENOENT') {
-        ux.error('Git must be installed to use the Heroku CLI.  See instructions here: http://git-scm.com')
+        ux.error('Git must be installed to use the Heroku CLI.  See instructions here: https://git-scm.com')
       }
       throw error
     }
@@ -27,7 +27,7 @@ export default class Git {
       const s = cp.spawn('git', args, {stdio: [0, 1, 2]})
       s.on('error', (err: Error & {code?: string}) => {
         if (err.code === 'ENOENT') {
-          ux.error('Git must be installed to use the Heroku CLI.  See instructions here: http://git-scm.com')
+          ux.error('Git must be installed to use the Heroku CLI.  See instructions here: https://git-scm.com')
         } else reject(err)
       })
       s.on('close', resolve)
diff --git a/packages/git/test/lib/git.js b/packages/git/test/lib/git.js
index ff92eff74b..e7a214313a 100644
--- a/packages/git/test/lib/git.js
+++ b/packages/git/test/lib/git.js
@@ -29,7 +29,7 @@ describe('git', function () {
 
     mock.expects('execFile').withArgs('git', ['remote']).yieldsAsync(err, null)
 
-    return expect(git.exec(['remote']), 'to be rejected with', 'Git must be installed to use the Heroku CLI.  See instructions here: http://git-scm.com')
+    return expect(git.exec(['remote']), 'to be rejected with', 'Git must be installed to use the Heroku CLI.  See instructions here: https://git-scm.com')
   })
 
   it('exec passes through all other errors', function () {
@@ -56,7 +56,7 @@ describe('git', function () {
     mock.expects('spawn').withExactArgs('git', ['remote'], { stdio: [0, 1, 2] }).returns(emitter)
     process.nextTick(() => emitter.emit('error', err))
 
-    return expect(git.spawn(['remote']), 'to be rejected with', 'Git must be installed to use the Heroku CLI.  See instructions here: http://git-scm.com')
+    return expect(git.spawn(['remote']), 'to be rejected with', 'Git must be installed to use the Heroku CLI.  See instructions here: https://git-scm.com')
   })
 
   it('spawn passes through all other errors', function () {