diff --git a/src/djlint/settings.py b/src/djlint/settings.py
index cf0cfbd..be456f3 100644
--- a/src/djlint/settings.py
+++ b/src/djlint/settings.py
@@ -506,7 +506,7 @@ class Config:
             rf"""
             (?:
                 (
-                    (?:\w|-|\.)+ | required | checked
+                    (?:\w|-|\.|\:|@)+ | required | checked
                 )? # attribute name
                 (?:  [ ]*?=[ ]*? # followed by "="
                     (
diff --git a/tests/test_html/test_alpinejs.py b/tests/test_html/test_alpinejs.py
index 26ee25c..7f42a28 100644
--- a/tests/test_html/test_alpinejs.py
+++ b/tests/test_html/test_alpinejs.py
@@ -23,7 +23,10 @@ def test_alpine_js(runner: CliRunner, tmp_file: TextIO) -> None:
         b"""<div id="collapse"
      x-data="{ show: true }"
      x-show="show"
-     x-transition.duration.500ms></div>""",
+     x-transition.duration.500ms
+     :disabled="!$store.userPreferences.deleteConfirm"
+     @click="clicked=true">
+</div>""",
     )
 
     assert output.exit_code == 0