diff --git a/spec/blueprint/html/attributes_handling_spec.cr b/spec/blueprint/html/attributes_handling_spec.cr
index eab94d2..983bd6a 100644
--- a/spec/blueprint/html/attributes_handling_spec.cr
+++ b/spec/blueprint/html/attributes_handling_spec.cr
@@ -29,7 +29,7 @@ describe "attributes handling" do
     actual_html.should eq expected_html
   end
 
-  it "replaces `_` by `-` on attribute names" do
+  it "replaces `_` by `-` on Symbol attribute names" do
     actual_html = Blueprint::HTML.build do
       section v_model: "user.name", "@click": "doSomething" do
         "Blueprint"
@@ -43,6 +43,26 @@ describe "attributes handling" do
     actual_html.should eq expected_html
   end
 
+  it "accepts Hash attributes" do
+    actual_html = Blueprint::HTML.build do
+      input({"data-on:mycustomevent__window" => "$result = evt.detail.value", "data-bind:foo" => true})
+
+      div(id: "myDiv", aria: {enabled: "true"}, data: {"on:mycustomevent__window" => "$result = evt.detail.value"}) do
+        "Hello"
+      end
+    end
+
+    expected_html = normalize_html <<-HTML
+      <input data-on:mycustomevent__window="$result = evt.detail.value" data-bind:foo>
+
+      <div id="myDiv" aria-enabled="true" data-on:mycustomevent__window="$result = evt.detail.value">
+        Hello
+      </div>
+    HTML
+
+    actual_html.should eq expected_html
+  end
+
   it "accepts boolean attributes" do
     actual_html = Blueprint::HTML.build do
       input disabled: true, checked: false, outline: "true", border: "false"
diff --git a/src/blueprint/html/attributes_renderer.cr b/src/blueprint/html/attributes_renderer.cr
index 68aed9c..abc6666 100644
--- a/src/blueprint/html/attributes_renderer.cr
+++ b/src/blueprint/html/attributes_renderer.cr
@@ -1,7 +1,7 @@
 module Blueprint::HTML::AttributesRenderer
   extend self
 
-  def render(attributes : NamedTuple, to buffer : String::Builder) : Nil
+  def render(attributes : NamedTuple | Hash, to buffer : String::Builder) : Nil
     attributes.each { |name, value| append_attribute(buffer, name, value) }
   end
 
@@ -15,7 +15,7 @@ module Blueprint::HTML::AttributesRenderer
     buffer << parse_name(name)
   end
 
-  private def append_attribute(buffer : String::Builder, name, value : NamedTuple) : Nil
+  private def append_attribute(buffer : String::Builder, name, value : NamedTuple | Hash) : Nil
     name_prefix = parse_name(name)
 
     value.each do |attr_name, attr_value|
@@ -51,7 +51,11 @@ module Blueprint::HTML::AttributesRenderer
     append_value buffer, value.to_s
   end
 
-  private def parse_name(name) : String
+  private def parse_name(name : Symbol) : String
     name.to_s.gsub("_", "-")
   end
+
+  private def parse_name(name : String) : String
+    name
+  end
 end
diff --git a/src/blueprint/html/element_registrar.cr b/src/blueprint/html/element_registrar.cr
index f3ce5ef..bd5339e 100644
--- a/src/blueprint/html/element_registrar.cr
+++ b/src/blueprint/html/element_registrar.cr
@@ -3,6 +3,14 @@ module Blueprint::HTML::ElementRegistrar
     {% tag ||= method_name.tr("_", "-") %}
 
     def {{method_name.id}}(**attributes, &block) : Nil
+      {{method_name.id}}(attributes) { yield }
+    end
+
+    def {{method_name.id}}(**attributes) : Nil
+      {{method_name.id}}(attributes)
+    end
+
+    def {{method_name.id}}(attributes : NamedTuple | Hash, &block) : Nil
       @buffer << "<{{tag.id}}"
       AttributesRenderer.render(attributes, to: @buffer)
       @buffer << ">"
@@ -10,7 +18,7 @@ module Blueprint::HTML::ElementRegistrar
       @buffer << "</{{tag.id}}>"
     end
 
-    def {{method_name.id}}(**attributes) : Nil
+    def {{method_name.id}}(attributes : NamedTuple | Hash) : Nil
       @buffer << "<{{tag.id}}"
       AttributesRenderer.render(attributes, to: @buffer)
       @buffer << "></{{tag.id}}>"
@@ -21,6 +29,10 @@ module Blueprint::HTML::ElementRegistrar
     {% tag ||= method_name.tr("_", "-") %}
 
     def {{method_name.id}}(**attributes) : Nil
+      {{method_name.id}}(attributes)
+    end
+
+    def {{method_name.id}}(attributes : NamedTuple | Hash) : Nil
       @buffer << "<{{tag.id}}"
       AttributesRenderer.render(attributes, to: @buffer)
       @buffer << "></{{tag.id}}>"
@@ -31,6 +43,10 @@ module Blueprint::HTML::ElementRegistrar
     {% tag ||= method_name.tr("_", "-") %}
 
     def {{method_name.id}}(**attributes) : Nil
+      {{method_name.id}}(attributes)
+    end
+
+    def {{method_name.id}}(attributes : NamedTuple | Hash) : Nil
       @buffer << "<{{tag.id}}"
       AttributesRenderer.render(attributes, to: @buffer)
       @buffer << ">"