diff --git a/requirements.txt b/requirements.txt
index 35eb174..61a35c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 future
 six
 zope.interface
-enum34
+enum-compat == 0.0.3
diff --git a/setup.py b/setup.py
index 3f492da..d50aa3b 100755
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ def read_requirements(filename):
 
 setup(
     name='serialization',
-    version='1.2.0',
+    version='1.2.1',
     description='Smart serialization library for Python language',
     long_description=readme + '\n\n' + history,
     author='Sebastien Merle, Marek Kowalski, Mateusz Probachta',
@@ -60,6 +60,9 @@ def read_requirements(filename):
         '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',
     ],
     tests_require=test_requirements,
 )