diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0dfc57479..d3b08d786 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,3 +14,11 @@ repos:
     rev: 26.5.1
     hooks:
       - id: black
+
+  - repo: https://github.com/tombi-toml/tombi-pre-commit
+    rev: v1.5.2
+    hooks:
+      - id: tombi-format
+        args: ["--offline"]
+      - id: tombi-lint
+        args: ["--offline"]
diff --git a/pyproject.toml b/pyproject.toml
index 67f7e09f5..7653d3bff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dynamic = ["version"]
 
 [project.optional-dependencies]
 all = [
-    "ultraplot[circos,docs,stats]",
+  "ultraplot[circos,docs,stats]",
 ]
 circos = [
   "pycirclize>=1.10.1",