diff --git a/lib/phlex.rb b/lib/phlex.rb
index 273d67e7..c4d08e67 100644
--- a/lib/phlex.rb
+++ b/lib/phlex.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "date"
 require "erb"
 require "set"
 require "zeitwerk"
diff --git a/quickdraw/load.test.rb b/quickdraw/load.test.rb
new file mode 100644
index 00000000..24e4b27c
--- /dev/null
+++ b/quickdraw/load.test.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class LoadTest < Quickdraw::Test
+	test "requiring phlex makes Date available" do
+		script = <<~RUBY
+			require "phlex"
+
+			Phlex::SGML::Attributes
+			print defined?(Date)
+		RUBY
+
+		output = IO.popen([RbConfig.ruby, "-e", script], err: [:child, :out], &:read)
+		assert_equal $?.exitstatus, 0
+		assert_equal output, "constant"
+	end
+end