diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d1c42a8..6be5194 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -37,3 +37,8 @@ repos:
     hooks:
     - id: bandit
       args: ["--skip", "B101"]
+
+  - repo: https://github.com/tox-dev/tox-ini-fmt
+    rev: "0.2.0"
+    hooks:
+      - id: tox-ini-fmt
diff --git a/tox.ini b/tox.ini
index f1faea9..ba26644 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,31 +1,33 @@
 [tox]
 envlist =
-    py36,
-    py37,
-    py38,
-    coverage,
-    pre-commit
+  py38
+  py37
+  py36
+  coverage
+  pre-commit
 
 [testenv]
 deps =
-    pytest
+  pytest
 commands =
-    pip install -U pip
-    pip install -e .
-    pytest {posargs}
-
-[testenv:pre-commit]
-skip_install = true
-deps = pre-commit
-commands = pre-commit run --all-files --show-diff-on-failure
+  pip install -U pip
+  pip install -e .
+  pytest {posargs}
 
 [testenv:coverage]
+commands =
+  pip install -U pip
+  pip install -e .[test]
+  pytest --cov=hibpcli --cov=tests --cov-report term-missing  --cov-report html
 develop =
-    true
+  true
+
+[testenv:pre-commit]
+skip_install = true
+deps =
+  pre-commit
 commands =
-    pip install -U pip
-    pip install -e .[test]
-    pytest --cov=hibpcli --cov=tests --cov-report term-missing  --cov-report html
+  pre-commit run --all-files --show-diff-on-failure
 
 [flake8]
 max-line-length = 88