diff --git a/.travis.yml b/.travis.yml
index b68c370..8a4b642 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,10 @@
 language: python
 
 python:
-  - "3.3"
-  - "3.4"
   - "3.5"
   - "3.6"
+  - "3.7"
+  - "3.8"
 
 env:
   - EXTRAS="N"
diff --git a/serialize/msgpack.py b/serialize/msgpack.py
index 54752b5..0d14fa6 100644
--- a/serialize/msgpack.py
+++ b/serialize/msgpack.py
@@ -25,6 +25,6 @@ def dumps(obj):
 
 
 def loads(content):
-    return msgpack.unpackb(content, object_hook=all.decode, encoding='utf-8')
+    return msgpack.unpackb(content, object_hook=all.decode, raw=False)
 
 all.register_format('msgpack', dumps, loads)
diff --git a/serialize/pickle.py b/serialize/pickle.py
index 16f1dd9..0ba83e8 100644
--- a/serialize/pickle.py
+++ b/serialize/pickle.py
@@ -11,7 +11,7 @@
     :license: BSD, see LICENSE for more details.
 """
 
-import collections
+from collections.abc import MutableMapping
 
 from . import all
 
@@ -23,7 +23,7 @@
     raise
 
 
-class DispatchTable(collections.MutableMapping):
+class DispatchTable(MutableMapping):
 
     def __getitem__(self, item):
         if item in all.CLASSES:
diff --git a/setup.py b/setup.py
index 6333b4b..02d0a8f 100644
--- a/setup.py
+++ b/setup.py
@@ -45,9 +45,8 @@ def read(filename):
         'Operating System :: POSIX',
         'Programming Language :: Python',
         'Topic :: Software Development :: Libraries',
-        'Programming Language :: Python :: 3.3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
     ])