diff --git a/hyper/common/headers.py b/hyper/common/headers.py
index 655a591a..6454f550 100644
--- a/hyper/common/headers.py
+++ b/hyper/common/headers.py
@@ -10,7 +10,7 @@
 from hyper.common.util import to_bytestring, to_bytestring_tuple
 
 
-class HTTPHeaderMap(collections.MutableMapping):
+class HTTPHeaderMap(collections.abc.MutableMapping):
     """
     A structure that contains HTTP headers.
 
diff --git a/hyper/http11/connection.py b/hyper/http11/connection.py
index 4311d307..57d1ed9e 100644
--- a/hyper/http11/connection.py
+++ b/hyper/http11/connection.py
@@ -10,7 +10,7 @@
 import socket
 import base64
 
-from collections import Iterable, Mapping
+from collections.abc import Iterable, Mapping
 
 import collections
 from hyperframe.frame import SettingsFrame
@@ -390,7 +390,7 @@ def _send_body(self, body, body_type):
                 return
 
             # Iterables that set a specific content length.
-            elif isinstance(body, collections.Iterable):
+            elif isinstance(body, collections.abc.Iterable):
                 for item in body:
                     try:
                         self._sock.send(item)
diff --git a/setup.py b/setup.py
index 94cd8d21..2b53432b 100644
--- a/setup.py
+++ b/setup.py
@@ -77,7 +77,7 @@ def run_tests(self):
         'Programming Language :: Python :: Implementation :: CPython',
     ],
     install_requires=[
-        'h2>=2.4,<3.0,!=2.5.0', 'hyperframe>=3.2,<4.0', 'rfc3986>=1.1.0,<2.0', 'brotlipy>=0.7.0,<1.0'
+        'h2>=2.4,!=2.5.0', 'hyperframe>=3.2', 'rfc3986>=1.1.0,<2.0', 'brotlipy>=0.7.0,<1.0'
     ],
     tests_require=['pytest', 'requests', 'mock'],
     cmdclass={'test': PyTest},