diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 21d5f06..59fd517 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -13,6 +13,7 @@
   * [Vim](editors/vim.md)
   * [Visual Studio Code](editors/visual-studio-code.md)
 * [Git](git/README.md)
+  * [Git Extras](git/git-extras.md)
   * [gitk](git/gitk.md)
   * [GitHub](git/github.md)
   * [Bitbucket](git/bitbucket.md)
diff --git a/src/git/git-extras.md b/src/git/git-extras.md
new file mode 100644
index 0000000..0e65d36
--- /dev/null
+++ b/src/git/git-extras.md
@@ -0,0 +1,14 @@
+# Git Extras
+
+[Git Extras](https://github.com/tj/git-extras) is a large collection of really
+useful utilities for Git repositories.
+
+## Installation
+
+```bash
+sudo apt install git-extras
+```
+
+## Usage
+
+See [git-extras/Commands.md](https://github.com/tj/git-extras/blob/main/Commands.md).