diff --git a/lib/async/http/protocol/http11.rb b/lib/async/http/protocol/http11.rb
index b4f39013..f81adce1 100755
--- a/lib/async/http/protocol/http11.rb
+++ b/lib/async/http/protocol/http11.rb
@@ -241,7 +241,7 @@ def read_headers
 					fields = []
 					
 					each_line do |line|
-						if line =~ /^([a-zA-Z\-]+):\s*(.+?)\s*$/
+						if line =~ /^([a-zA-Z\-\d]+):\s*(.+?)\s*$/
 							fields << [$1, $2]
 						else
 							break
diff --git a/spec/async/http/protocol/http11_spec.rb b/spec/async/http/protocol/http11_spec.rb
index c1d11db8..2a99c50e 100755
--- a/spec/async/http/protocol/http11_spec.rb
+++ b/spec/async/http/protocol/http11_spec.rb
@@ -29,7 +29,7 @@
 		subject {described_class.new(stream)}
 
 		describe "simple request" do
-			let(:request) {"GET / HTTP/1.1\r\nHost: localhost\r\nAccept: */*\r\n\r\n"}
+			let(:request) {"GET / HTTP/1.1\r\nHost: localhost\r\nAccept: */*\r\nHeader-0: value 1\r\n"}
 			let(:io) {StringIO.new(request)}
 		
 			it "reads request" do
@@ -39,7 +39,7 @@
 				expect(method).to be == 'GET'
 				expect(url).to be == '/'
 				expect(version).to be == 'HTTP/1.1'
-				expect(headers).to be == {'accept' => ['*/*']}
+				expect(headers).to be == {'accept' => ['*/*'], "header-0" => ["value 1"]}
 				expect(body).to be nil
 			end
 		end