diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 4bf2131..62367aa 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,13 @@
 ChangeLog
 =========
 
+0.8.5 (2020-09-19)
+------------------
+
+* fix a critical issue pytest cannot detect randomize marker
+* drop supporting pytest < 4.0.0
+* drop supporting python 3.5
+
 0.8.4 (2020-03-06)
 ------------------
 
diff --git a/README.rst b/README.rst
index 4e6c4e3..dc48f97 100644
--- a/README.rst
+++ b/README.rst
@@ -1,7 +1,7 @@
 Requirements
 ------------
 
-* Python 2.7 or 3.5 and later
+* Python 2.7 or 3.6 and later
 
 Features
 --------
@@ -13,7 +13,6 @@ Installation
 
 ::
 
-    $ easy_install pytest-quickcheck # or
     $ pip install pytest-quickcheck
 
 Quick Start
diff --git a/setup.py b/setup.py
index 2c3ae7b..68201d1 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup
 
-VERSION = "0.8.4"
-REQUIRES = ["pytest >= 2.2"]
+VERSION = "0.8.5"
+REQUIRES = ["pytest>=4.0,<6.0.0"]
 
 try:
     LONG_DESCRIPTION = "".join([
@@ -20,7 +20,6 @@
     "Programming Language :: Python",
     "Programming Language :: Python :: 2.7",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.5",
     "Programming Language :: Python :: 3.6",
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
@@ -36,6 +35,7 @@
     description="pytest plugin to generate random data inspired by QuickCheck",
     license="Apache License 2.0",
     long_description=LONG_DESCRIPTION,
+    long_description_content_type="text/x-rst",
     classifiers=CLASSIFIERS,
     keywords=["test", "pytest", "quickcheck"],
     author="Tetsuya Morimoto",
@@ -45,5 +45,5 @@
     packages=["pytest_quickcheck"],
     entry_points={"pytest11": ["quickcheck = pytest_quickcheck.plugin"]},
     install_requires=REQUIRES,
-    tests_require=["tox", "pytest", "pytest-codestyle", "pytest-flakes"],
+    tests_require=["tox", "pytest", "pytest-pycodestyle", "pytest-flakes"],
 )