diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index c71682b..32b7ea8 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -4,3 +4,9 @@
   entry: tach check
   language: python
   pass_filenames: false
+- id: tach-external
+  name: tach-external
+  description: Validate external package dependencies
+  entry: tach check-external
+  language: python
+  pass_filenames: false
diff --git a/README.md b/README.md
index 6eac213..ac442ad 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Distributed as a standalone repository to enable installing Tach via prebuilt wh
 
 ### Using Tach with pre-commit
 
-To run `tach check` via pre-commit, add the following to your `.pre-commit-config.yaml`:
+To run [`tach check`](https://docs.gauge.sh/usage/commands#tach-check) and [`tach check-external`](https://docs.gauge.sh/usage/commands#tach-check-external) via pre-commit, add the following to your `.pre-commit-config.yaml`:
 
 ```yaml
 - repo: https://github.com/gauge-sh/tach-pre-commit
@@ -15,4 +15,7 @@ To run `tach check` via pre-commit, add the following to your `.pre-commit-confi
   rev: v0.15.2
   hooks:
     - id: tach
+    - id: tach-external
 ```
+
+Use [`args`](https://pre-commit.com/#config-args) to pass additional arguments to the `tach` commands.