diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ad31348..21bf4cb6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 - Fix missing include files when installing `protoc` on Linux and macOS.
 
+- Installation of `protoc` on Windows is not currently working (in all released versions) and is considered unsupported.
+
 ## [1.10.0] - 2022-08-01
 
 - Set the `PROTOC` environment variable when installing `protoc` if it has not already been set.
diff --git a/README.md b/README.md
index 1110a931..a3d0bfc2 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ https://spdx.org/licenses
 | [**mdbook-linkcheck**](https://github.com/Michael-F-Bryan/mdbook-linkcheck) | `$CARGO_HOME/bin` | [GitHub Releases](https://github.com/Michael-F-Bryan/mdbook-linkcheck/releases) | Linux, macOS, Windows | [MIT](https://github.com/Michael-F-Bryan/mdbook-linkcheck/blob/HEAD/LICENSE) |
 | [**mdbook**](https://github.com/rust-lang/mdBook) | `$CARGO_HOME/bin` | [GitHub Releases](https://github.com/rust-lang/mdBook/releases) | Linux, macOS, Windows | [MPL-2.0](https://github.com/rust-lang/mdBook/blob/HEAD/LICENSE) |
 | [**nextest**](https://github.com/nextest-rs/nextest) (alias: `cargo-nextest`) | `$CARGO_HOME/bin` | [GitHub Releases](https://github.com/nextest-rs/nextest/releases) | Linux, macOS, Windows | [Apache-2.0](https://github.com/nextest-rs/nextest/blob/HEAD/LICENSE-APACHE) OR [MIT](https://github.com/nextest-rs/nextest/blob/HEAD/LICENSE-MIT) |
-| [**protoc**](https://github.com/protocolbuffers/protobuf) | `/usr/local/bin` | [GitHub Releases](https://github.com/protocolbuffers/protobuf/releases) | Linux, macOS, Windows | [BSD-3-Clause](https://github.com/protocolbuffers/protobuf/blob/HEAD/LICENSE) |
+| [**protoc**](https://github.com/protocolbuffers/protobuf) | `/usr/local/bin` | [GitHub Releases](https://github.com/protocolbuffers/protobuf/releases) | Linux, macOS | [BSD-3-Clause](https://github.com/protocolbuffers/protobuf/blob/HEAD/LICENSE) |
 | [**shellcheck**](https://www.shellcheck.net) | `/usr/local/bin` | [GitHub Releases](https://github.com/koalaman/shellcheck/releases) | Linux, macOS, Windows | [GPL-3.0-or-later](https://github.com/koalaman/shellcheck/blob/HEAD/LICENSE) |
 | [**shfmt**](https://github.com/mvdan/sh) | `/usr/local/bin` | [GitHub Releases](https://github.com/mvdan/sh/releases) | Linux, macOS, Windows | [BSD-3-Clause](https://github.com/mvdan/sh/blob/HEAD/LICENSE) |
 | [**valgrind**](https://valgrind.org) | `/snap/bin` | [snap](https://snapcraft.io/install/valgrind/ubuntu) | Linux | [GPL-2.0-or-later](https://valgrind.org/docs/manual/license.gpl.html) |