diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a8b6fbe..707053e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,6 +8,12 @@ repos:
     -   id: end-of-file-fixer
     -   id: check-yaml
     -   id: check-added-large-files
+- repo: https://github.com/astral-sh/ruff-pre-commit
+  # Ruff version.
+  rev: v0.0.281
+  hooks:
+    - id: ruff
+      args: [ --fix, --exit-non-zero-on-fix ]
 -   repo: https://github.com/psf/black
     rev: 21.5b2
     hooks:
diff --git a/src/scikits/bootstrap/bootstrap.py b/src/scikits/bootstrap/bootstrap.py
index 8fc46c0..ca711e8 100644
--- a/src/scikits/bootstrap/bootstrap.py
+++ b/src/scikits/bootstrap/bootstrap.py
@@ -21,7 +21,6 @@
         Tuple,
         Iterable,
         Iterator,
-        Type,
         TYPE_CHECKING,
     )
 else:
@@ -63,9 +62,6 @@
     "bootstrap_indices_moving_block",
 )
 
-if False:
-    import pandas as pd
-
 s2 = sqrt(2)