diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 59cc7f7..e2eb353 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -37,6 +37,9 @@ jobs:
       - name: Rustdoc
         run: cargo doc --workspace --no-deps
 
+      - name: Unused dependencies
+        uses: bnjbvr/cargo-machete@v0.7.0
+
       - name: Typos
         uses: crate-ci/typos@v1.26.0
 
diff --git a/contrib/pre-commit b/contrib/pre-commit
index da74696..fcc6da9 100755
--- a/contrib/pre-commit
+++ b/contrib/pre-commit
@@ -1,5 +1,9 @@
 #!/usr/bin/env bash
 set -euo pipefail
-typos
 cargo fmt -- --check
 fd -e nix | xargs nixfmt --check
+if ! out="$(cargo machete 2>/dev/null)"; then
+    echo "$out"
+    exit 1
+fi
+typos