diff --git a/poetry.lock b/poetry.lock
index 497db29..c6ad78b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -77,6 +77,14 @@ tomli = {version = "*", optional = true, markers = "extra == \"toml\""}
 [package.extras]
 toml = ["tomli"]
 
+[[package]]
+name = "html-tag-names"
+version = "0.1.2"
+description = "List of known HTML tag names"
+category = "main"
+optional = false
+python-versions = ">=3.7,<4.0"
+
 [[package]]
 name = "html-void-elements"
 version = "0.1.0"
@@ -308,7 +316,7 @@ test = ["coverage", "pytest", "pytest-cov"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7,<4.0"
-content-hash = "fea66cefbd7968999e5056758a159a08be59079912f90b4ee1ac9e529fbde2ae"
+content-hash = "a72c15aeda26733105d97f016255c240b0180f09b404ffde3497271717b4f103"
 
 [metadata.files]
 atomicwrites = [
@@ -395,6 +403,10 @@ coverage = [
     {file = "coverage-6.3.1-pp36.pp37.pp38-none-any.whl", hash = "sha256:463e52616ea687fd323888e86bf25e864a3cc6335a043fad6bbb037dbf49bbe2"},
     {file = "coverage-6.3.1.tar.gz", hash = "sha256:6c3f6158b02ac403868eea390930ae64e9a9a2a5bbfafefbb920d29258d9f2f8"},
 ]
+html-tag-names = [
+    {file = "html-tag-names-0.1.2.tar.gz", hash = "sha256:04924aca48770f36b5a41c27e4d917062507be05118acb0ba869c97389084297"},
+    {file = "html_tag_names-0.1.2-py3-none-any.whl", hash = "sha256:eeb69ef21078486b615241f0393a72b41352c5219ee648e7c61f5632d26f0420"},
+]
 html-void-elements = [
     {file = "html-void-elements-0.1.0.tar.gz", hash = "sha256:931b88f84cd606fee0b582c28fcd00e41d7149421fb673e1e1abd2f0c4f231f0"},
     {file = "html_void_elements-0.1.0-py3-none-any.whl", hash = "sha256:784cf39db03cdeb017320d9301009f8f3480f9d7b254d0974272e80e0cb5e0d2"},
diff --git a/pyproject.toml b/pyproject.toml
index 79d3268..7228c10 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,6 +42,7 @@ pytest-cov = { version = "^3.0.0", optional = true }
 pathspec = "^0.9.0"
 importlib-metadata = "^4.11.0"
 html-void-elements = "^0.1.0"
+html-tag-names = "^0.1.2"
 
 [tool.poetry.dev-dependencies]
 black = "^22.1.0"
diff --git a/requirements.txt b/requirements.txt
index c21d3c3..1b856d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 black==22.1.0; python_full_version >= "3.6.2"
 click==8.0.3; python_version >= "3.6"
 colorama==0.4.4; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.5.0")
+html-tag-names==0.1.2; python_version >= "3.7" and python_version < "4.0"
 html-void-elements==0.1.0; python_version >= "3.7" and python_version < "4.0"
 importlib-metadata==4.11.0; python_version >= "3.7"
 isort==5.10.1; python_full_version >= "3.6.1" and python_version < "4.0"
diff --git a/src/djlint/settings.py b/src/djlint/settings.py
index a2fb410..161dcf2 100644
--- a/src/djlint/settings.py
+++ b/src/djlint/settings.py
@@ -10,11 +10,11 @@ import logging
 from pathlib import Path
 from typing import Dict, List, Optional, Union
 
-from HtmlVoidElements import html_void_elements
-
 import yaml
 from click import echo
 from colorama import Fore
+from HtmlTagNames import html_tag_names
+from HtmlVoidElements import html_void_elements
 from pathspec import PathSpec
 from pathspec.patterns.gitwildmatch import GitWildMatchPatternError
 
@@ -366,134 +366,7 @@ class Config:
         """
 
         # all html tags possible
-        self.indent_html_tags: str = (
-            r""" a
-                | abbr
-                | acronym
-                | address
-                | applet
-                | area
-                | article
-                | aside
-                | audio
-                | b
-                | base
-                | basefont
-                | bdi
-                | bdo
-                | big
-                | blockquote
-                | body
-                | br
-                | button
-                | canvas
-                | caption
-                | center
-                | cite
-                | code
-                | col
-                | colgroup
-                | data
-                | datalist
-                | dd
-                | del
-                | details
-                | dfn
-                | dialog
-                | dir
-                | div
-                | dl
-                | dt
-                | em
-                | embed
-                | fieldset
-                | figcaption
-                | figure
-                | font
-                | footer
-                | form
-                | frame
-                | frameset
-                | h1
-                | h2
-                | h3
-                | h4
-                | h5
-                | h6
-                | head
-                | header
-                | hr
-                | html
-                | i
-                | iframe
-                | icon
-                | img
-                | input
-                | ins
-                | kbd
-                | label
-                | legend
-                | li
-                | link
-                | main
-                | map
-                | mark
-                | meta
-                | meter
-                | nav
-                | noframes
-                | noscript
-                | object
-                | ol
-                | optgroup
-                | option
-                | output
-                | p
-                | pre
-                | path
-                | param
-                | picture
-                | progress
-                | q
-                | rp
-                | rt
-                | ruby
-                | s
-                | samp
-                | script
-                | section
-                | select
-                | small
-                | source
-                | span
-                | strike
-                | strong
-                | style
-                | sub
-                | summary
-                | sup
-                | svg
-                | table
-                | tbody
-                | td
-                | template
-                | textarea
-                | tfoot
-                | th
-                | thead
-                | time
-                | title
-                | tr
-                | track
-                | tt
-                | u
-                | ul
-                | var
-                | video
-                | wbr
-            """
-            + self.custom_html
-        )
+        self.indent_html_tags: str = "|".join(html_tag_names) + self.custom_html
 
         self.indent_template_tags: str = (
             r"""  if