diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5fd3728fc7a..a59b92f3e977 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -416,7 +416,7 @@ for Rust libraries in [RFC #1105](https://github.com/rust-lang/rfcs/blob/master/
   when [boxed][boxed-0.11.0].
 
 [select-0.11.0]: https://docs.rs/diesel/0.11.0/diesel/fn.select.html
-[boxed-0.11.0]: http://docs.rs/diesel/0.11.0/prelude/trait.BoxedDsl.html
+[boxed-0.11.0]: https://docs.rs/diesel/0.11.0/prelude/trait.BoxedDsl.html
 
 * Arrays containing null are now supported. `infer_schema!` will never infer an
   array that contains null, but a `table!` definition which specifies a type of
diff --git a/README.md b/README.md
index dfe570b5cfb1..755f9253b33c 100644
--- a/README.md
+++ b/README.md
@@ -33,9 +33,9 @@ this GitHub repository, must follow our [code of conduct](https://github.com/die
 Licensed under either of these:
 
  * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
-   http://www.apache.org/licenses/LICENSE-2.0)
+   https://www.apache.org/licenses/LICENSE-2.0)
  * MIT license ([LICENSE-MIT](LICENSE-MIT) or
-   http://opensource.org/licenses/MIT)
+   https://opensource.org/licenses/MIT)
 
 ### Contributing
 
diff --git a/code_of_conduct.md b/code_of_conduct.md
index 87eae46791ba..0374fa06440e 100644
--- a/code_of_conduct.md
+++ b/code_of_conduct.md
@@ -74,7 +74,7 @@ members of the project's leadership.
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at [http://contributor-covenant.org/version/1/4][version]
+available at [https://contributor-covenant.org/version/1/4][version]
 
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/4/
+[homepage]: https://contributor-covenant.org
+[version]: https://contributor-covenant.org/version/1/4/