diff --git a/plugins/gh/.gitignore b/plugins/gh/.gitignore
new file mode 100644
index 000000000..fa1244ab5
--- /dev/null
+++ b/plugins/gh/.gitignore
@@ -0,0 +1 @@
+_gh
diff --git a/plugins/gh/README.md b/plugins/gh/README.md
new file mode 100644
index 000000000..54e046a1c
--- /dev/null
+++ b/plugins/gh/README.md
@@ -0,0 +1,23 @@
+# GitHub CLI plugin
+
+This plugin adds completion for the [GitHub CLI](https://cli.github.com/).
+
+To use it, add `gh` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... gh)
+```
+
+This plugin does not add any aliases.
+
+## Cache
+
+This plugin caches the completion script and is automatically updated when the
+plugin is loaded, which is usually when you start up a new terminal emulator.
+
+The cache is stored at:
+
+- `$ZSH/plugins/gh/_gh` completions script
+
+- `$ZSH_CACHE_DIR/gh_version` version of GitHub CLI, used to invalidate
+  the cache.
diff --git a/plugins/gh/gh.plugin.zsh b/plugins/gh/gh.plugin.zsh
new file mode 100644
index 000000000..8e055ec35
--- /dev/null
+++ b/plugins/gh/gh.plugin.zsh
@@ -0,0 +1,13 @@
+# Autocompletion for the GitHub CLI (gh).
+
+if (( $+commands[gh] )); then
+  if [[ ! -r "$ZSH_CACHE_DIR/gh_version" \
+    || "$(gh --version)" != "$(< "$ZSH_CACHE_DIR/gh_version")"
+    || ! -f "$ZSH/plugins/gh/_gh" ]]; then
+    gh completion --shell zsh > $ZSH/plugins/gh/_gh
+    gh --version > $ZSH_CACHE_DIR/gh_version
+  fi
+  autoload -Uz _gh
+  _comps[gh]=_gh
+fi
+