diff --git a/setup.py b/setup.py
index 4f8a995..969af4e 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@
 
 setup(
 	name='cysimdjson',
-	version="21.11b2",
+	version="21.11",
 	description='Cython-based wrapper for SIMDJSON',
 	long_description=long_description,
 	long_description_content_type='text/markdown',
@@ -35,7 +35,7 @@
 	author_email='info@teskalabs.com',
 	platforms='any',
 	classifiers=[
-		'Development Status :: 4 - Beta',
+		'Development Status :: 5 - Production/Stable',
 		'License :: OSI Approved :: Apache Software License',
 		'Programming Language :: Python :: 3.6',
 		'Programming Language :: Python :: 3.7',
@@ -53,5 +53,18 @@
 	},
 	install_requires=[
 	],
+	setup_requires=[
+		"cython"
+	],
+	package_data={
+		"cysimdjson": [
+			"cysimdjson.pyx",
+			"cysimdjson.h",
+			"cysimdjsonc.h",
+			"jsoninter.h",
+			"pysimdjson/errors.h",
+			"simdjson/simdjson.h",
+		]
+	},
 	ext_modules=cythonize(extensions),
 )