diff --git a/Gemfile b/Gemfile
index 3164af0..6d04da7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -46,6 +46,7 @@ gem "cssbundling-rails"
 
 # Simple ERB to Phlex converter
 gem "phlexing", path: "gem"
+gem "html_press", github: "marcoroth/html_press", branch: "non-standard-attributes"
 
 # A pure Ruby code highlighter that is compatible with Pygments
 gem "rouge", "~> 4.2"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4aab4ca..3941613 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,6 +14,16 @@ GIT
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
 
+GIT
+  remote: https://github.com/marcoroth/html_press.git
+  revision: 24ce95baae9912f8131d050cf253b688eb616cbf
+  branch: non-standard-attributes
+  specs:
+    html_press (0.8.2)
+      htmlentities
+      multi_css (>= 0.1.0)
+      multi_js (>= 0.1.0)
+
 PATH
   remote: gem
   specs:
@@ -109,7 +119,7 @@ GEM
     bootsnap (1.18.3)
       msgpack (~> 1.2)
     builder (3.2.4)
-    cgi (0.4.0)
+    cgi (0.4.1)
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
     crass (1.0.6)
@@ -131,16 +141,12 @@ GEM
       rainbow (>= 2.1.0)
     drb (2.2.0)
       ruby2_keywords
-    erb (4.0.3)
+    erb (4.0.4)
       cgi (>= 0.3.3)
     erubi (1.12.0)
-    execjs (2.8.1)
+    execjs (2.9.1)
     globalid (1.2.1)
       activesupport (>= 6.1)
-    html_press (0.8.2)
-      htmlentities
-      multi_css (>= 0.1.0)
-      multi_js (>= 0.1.0)
     htmlentities (4.3.4)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -150,7 +156,7 @@ GEM
       reline (>= 0.4.2)
     jsbundling-rails (1.3.0)
       railties (>= 6.0.0)
-    json (2.6.3)
+    json (2.7.1)
     loofah (2.22.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
@@ -161,7 +167,7 @@ GEM
       net-smtp
     marcel (1.0.2)
     mini_mime (1.1.5)
-    minitest (5.21.2)
+    minitest (5.22.0)
     msgpack (1.7.2)
     multi_css (0.1.0)
       css_press
@@ -288,7 +294,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.6.12)
+    zeitwerk (2.6.13)
 
 PLATFORMS
   arm64-darwin-21
@@ -301,6 +307,7 @@ DEPENDENCIES
   bootsnap
   cssbundling-rails
   debug
+  html_press!
   irb (~> 1.11)
   jsbundling-rails
   phlexing!
diff --git a/gem/Gemfile b/gem/Gemfile
index 0fe4dc7..32f7a9f 100644
--- a/gem/Gemfile
+++ b/gem/Gemfile
@@ -8,3 +8,4 @@ gem "maxitest", "~> 4.4"
 gem "minitest", "~> 5.0"
 gem "rake", "~> 13.0"
 gem "rubocop", require: false, github: "joeldrapper/rubocop", branch: "rubocop-user-agent"
+gem "html_press", github: "marcoroth/html_press", branch: "non-standard-attributes"
diff --git a/gem/Gemfile.lock b/gem/Gemfile.lock
index e4621c0..cfc5664 100644
--- a/gem/Gemfile.lock
+++ b/gem/Gemfile.lock
@@ -14,6 +14,16 @@ GIT
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
 
+GIT
+  remote: https://github.com/marcoroth/html_press.git
+  revision: 24ce95baae9912f8131d050cf253b688eb616cbf
+  branch: non-standard-attributes
+  specs:
+    html_press (0.8.2)
+      htmlentities
+      multi_css (>= 0.1.0)
+      multi_js (>= 0.1.0)
+
 PATH
   remote: .
   specs:
@@ -115,10 +125,6 @@ GEM
     execjs (2.8.1)
     globalid (1.1.0)
       activesupport (>= 5.0)
-    html_press (0.8.2)
-      htmlentities
-      multi_css (>= 0.1.0)
-      multi_js (>= 0.1.0)
     htmlentities (4.3.4)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -228,6 +234,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  html_press!
   maxitest (~> 4.4)
   minitest (~> 5.0)
   phlexing!
diff --git a/gem/lib/phlexing/helpers.rb b/gem/lib/phlexing/helpers.rb
index 0bdbc02..8e9240e 100644
--- a/gem/lib/phlexing/helpers.rb
+++ b/gem/lib/phlexing/helpers.rb
@@ -24,7 +24,15 @@ def symbol(string)
     end
 
     def arg(string)
-      "#{string}: "
+      if string.include?(".") || string.include?("@")
+        %(#{double_quotes(string)}: )
+      else
+        "#{string}: "
+      end
+    end
+
+    def double_quotes(string)
+      %("#{string}")
     end
 
     def quote(string)
diff --git a/gem/lib/phlexing/parser.rb b/gem/lib/phlexing/parser.rb
index 346223d..02c93d9 100644
--- a/gem/lib/phlexing/parser.rb
+++ b/gem/lib/phlexing/parser.rb
@@ -25,7 +25,7 @@ def self.call(source)
       elsif source =~ body_tag
         Nokogiri::HTML::Document.parse(source).css("body").first
       else
-        Nokogiri::HTML::DocumentFragment.parse(source)
+        Nokogiri::HTML5::DocumentFragment.parse(source)
       end
     end
   end
diff --git a/gem/lib/phlexing/template_generator.rb b/gem/lib/phlexing/template_generator.rb
index 5acc61d..8c3bc39 100644
--- a/gem/lib/phlexing/template_generator.rb
+++ b/gem/lib/phlexing/template_generator.rb
@@ -114,7 +114,7 @@ def handle_erb_attribute_output(attribute)
     end
 
     def handle_erb_interpolation_in_tag(attribute)
-      "**#{parens("#{unwrap_erb(unescape(attribute.value))}: true")}"
+      "**#{braces("#{unwrap_erb(unescape(attribute.value))}: true")}"
     end
 
     def handle_erb_safe_node(node)
@@ -227,7 +227,7 @@ def handle_node(node, level = 0)
         else
           handle_element_node(node, level)
         end
-      in Nokogiri::HTML4::Document | Nokogiri::HTML4::DocumentFragment | Nokogiri::XML::DTD
+      in Nokogiri::HTML4::Document | Nokogiri::HTML4::DocumentFragment | Nokogiri::HTML5::DocumentFragment | Nokogiri::XML::DTD
         handle_document_node(node, level)
       in Nokogiri::XML::Comment
         handle_html_comment_node(node)
diff --git a/gem/test/phlexing/converter/attributes_test.rb b/gem/test/phlexing/converter/attributes_test.rb
index 812da84..b5b54f0 100644
--- a/gem/test/phlexing/converter/attributes_test.rb
+++ b/gem/test/phlexing/converter/attributes_test.rb
@@ -83,7 +83,7 @@ class Phlexing::Converter::AttributesTest < Minitest::Spec
     HTML
 
     expected = <<~PHLEX.strip
-      input(type: %(checkbox), **(" selected": true))
+      input(type: "checkbox", **{ " selected": true })
     PHLEX
 
     assert_phlex_template expected, html
@@ -146,4 +146,24 @@ class Phlexing::Converter::AttributesTest < Minitest::Spec
       assert_locals "background", "display"
     end
   end
+
+  it "should support Alpine.js attributes" do
+    html = %(<button @click.prevent="something">Button</button>)
+
+    expected = <<~PHLEX.strip
+      button("@click.prevent": "something") { "Button" }
+    PHLEX
+
+    assert_phlex_template expected, html
+  end
+
+  it "should support attributes with @" do
+    html = %(<button @prevent="something">Button</button>)
+
+    expected = <<~PHLEX.strip
+      button("@prevent": "something") { "Button" }
+    PHLEX
+
+    assert_phlex_template expected, html
+  end
 end
diff --git a/gem/test/phlexing/minifier_test.rb b/gem/test/phlexing/minifier_test.rb
index bdd9c57..0c58eb1 100644
--- a/gem/test/phlexing/minifier_test.rb
+++ b/gem/test/phlexing/minifier_test.rb
@@ -99,5 +99,24 @@ class MinifierTest < Minitest::Spec
 
       assert_equal expected, Minifier.call(input)
     end
+
+    it "should not minify alpine.js attributes" do
+      input = %(<button @click.prevent="something">Button</button>)
+      expected = %(<button @click.prevent="something">Button</button>)
+
+      assert_equal expected, Minifier.call(input)
+
+      input = %(<button @click.prevent='something'>Button</button>)
+      expected = %(<button @click.prevent='something'>Button</button>)
+
+      assert_equal expected, Minifier.call(input)
+    end
+
+    xit "should properly minify attribute interpolation" do
+      input = %(<input type="checkbox" <%= "selected" %> />)
+      expected = %(<input type="checkbox" <%= "selected" %> />)
+
+      assert_equal expected, Minifier.call(input)
+    end
   end
 end
diff --git a/gem/test/phlexing/parser_test.rb b/gem/test/phlexing/parser_test.rb
index 59ff496..6f8fe88 100644
--- a/gem/test/phlexing/parser_test.rb
+++ b/gem/test/phlexing/parser_test.rb
@@ -30,7 +30,7 @@ def extract_children(node)
       assert_equal "#document-fragment", extract_children(parser).join(",")
       assert_dom_equal "", parser.to_xml
       assert_equal "#document-fragment", parser.name
-      assert_equal Nokogiri::HTML4::DocumentFragment, parser.class
+      assert_equal Nokogiri::HTML5::DocumentFragment, parser.class
     end
 
     it "should handle empty string" do
@@ -39,7 +39,7 @@ def extract_children(node)
       assert_equal "#document-fragment", extract_children(parser).join(",")
       assert_dom_equal "", parser.to_xml
       assert_equal "#document-fragment", parser.name
-      assert_equal Nokogiri::HTML4::DocumentFragment, parser.class
+      assert_equal Nokogiri::HTML5::DocumentFragment, parser.class
     end
 
     it "should handle simple div" do
@@ -48,7 +48,7 @@ def extract_children(node)
       assert_equal "#document-fragment,div", extract_children(parser).join(",")
       assert_dom_equal %(<div></div>), parser.to_html
       assert_equal "#document-fragment", parser.name
-      assert_equal Nokogiri::HTML4::DocumentFragment, parser.class
+      assert_equal Nokogiri::HTML5::DocumentFragment, parser.class
     end
 
     it "should handle ERB" do
@@ -57,7 +57,7 @@ def extract_children(node)
       assert_equal "#document-fragment,div,erb,text", extract_children(parser).join(",")
       assert_dom_equal %(<div> <erb loud=""> some_method </erb> </div>), parser.to_xml
       assert_equal "#document-fragment", parser.name
-      assert_equal Nokogiri::HTML4::DocumentFragment, parser.class
+      assert_equal Nokogiri::HTML5::DocumentFragment, parser.class
     end
 
     it "should handle html" do