diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 4b6110b3..a135b860 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -3,7 +3,7 @@ name: Continuous Integration - Docs
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - "**.rs"
       - "Cargo.toml"
diff --git a/README.md b/README.md
index 4e84e8f3..dd2884e9 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![Maintenance](https://img.shields.io/badge/maintenance-actively%20maintained-brightgreen.svg)](https://github.com/env-logger-rs/env_logger)
 [![crates.io](https://img.shields.io/crates/v/env_logger.svg)](https://crates.io/crates/env_logger)
 [![Documentation](https://docs.rs/env_logger/badge.svg)](https://docs.rs/env_logger)
-[![Documentation](https://img.shields.io/badge/docs-master-blue.svg)](https://env-logger-rs.github.io/env_logger/env_logger/index.html)
+[![Documentation](https://img.shields.io/badge/docs-main-blue.svg)](https://env-logger-rs.github.io/env_logger/env_logger/index.html)
 ==========
 
 Implements a logger that can be configured via environment variables.
@@ -12,7 +12,7 @@ Implements a logger that can be configured via environment variables.
 
 ### In libraries
 
-`env_logger` makes sense when used in executables (binary projects). Libraries should use the [`log`](https://doc.rust-lang.org/log) crate instead.
+`env_logger` makes sense when used in executables (binary projects). Libraries should use the [`log`](https://docs.rs/log) crate instead.
 
 ### In executables
 
@@ -77,7 +77,7 @@ There is also a pseudo logging level, `off`, which may be specified to disable
 all logging for a given module or for the entire application. As with the
 logging levels, the letter case is not significant.
 
-`env_logger` can be configured in other ways besides an environment variable. See [the examples](https://github.com/env-logger-rs/env_logger/tree/master/examples) for more approaches.
+`env_logger` can be configured in other ways besides an environment variable. See [the examples](https://github.com/env-logger-rs/env_logger/tree/main/examples) for more approaches.
 
 ### In tests
 
diff --git a/src/fmt/writer/termcolor/extern_impl.rs b/src/fmt/writer/termcolor/extern_impl.rs
index 11012fb1..7a9ef16d 100644
--- a/src/fmt/writer/termcolor/extern_impl.rs
+++ b/src/fmt/writer/termcolor/extern_impl.rs
@@ -453,7 +453,7 @@ impl_styled_value_fmt!(
     fmt::LowerExp
 );
 
-// The `Color` type is copied from https://github.com/BurntSushi/ripgrep/tree/master/termcolor
+// The `Color` type is copied from https://github.com/BurntSushi/termcolor
 
 /// The set of available colors for the terminal foreground/background.
 ///
diff --git a/src/lib.rs b/src/lib.rs
index 85041085..0eb3e11f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,10 +1,10 @@
 // Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
+// https://www.rust-lang.org/COPYRIGHT.
 //
 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.