diff --git a/.github/workflows/formatting_check.yml b/.github/workflows/formatting_check.yml
index 8a04fc2..4941d83 100644
--- a/.github/workflows/formatting_check.yml
+++ b/.github/workflows/formatting_check.yml
@@ -7,5 +7,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: paolorechia/pox@v1.0.1
+      - uses: actionshub/markdownlint@main
         with:
           tox_env: "format_check"
\ No newline at end of file
diff --git a/.markdown_style.rb b/.markdown_style.rb
new file mode 100644
index 0000000..61f127b
--- /dev/null
+++ b/.markdown_style.rb
@@ -0,0 +1,3 @@
+all
+exclude_tag :line_length
+rule 'MD007', :indent => 4
diff --git a/tox.ini b/tox.ini
index 672927b..88df732 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,9 +17,11 @@ deps =
     isort
     black
 skip_install = True
+allowlist_externals = mdl
 commands =
     isort bdfr tests --check
     black bdfr tests --line-length 120 --check
+    mdl README.md docs/ -s .markdown_style.rb
 
 [isort]
 profile = black