diff --git a/_pytest/__init__.py b/_pytest/__init__.py
index b62e881cb..cd0dc64e4 100644
--- a/_pytest/__init__.py
+++ b/_pytest/__init__.py
@@ -1,2 +1,2 @@
 #
-__version__ = '2.3.3'
+__version__ = '2.3.4.dev1'
diff --git a/_pytest/assertion/newinterpret.py b/_pytest/assertion/newinterpret.py
index de03eaf8b..e7e9658d7 100644
--- a/_pytest/assertion/newinterpret.py
+++ b/_pytest/assertion/newinterpret.py
@@ -11,7 +11,7 @@ from _pytest.assertion import util
 from _pytest.assertion.reinterpret import BuiltinAssertionError
 
 
-if sys.platform.startswith("java") and sys.version_info < (2, 5, 2):
+if sys.platform.startswith("java"):
     # See http://bugs.jython.org/issue1497
     _exprs = ("BoolOp", "BinOp", "UnaryOp", "Lambda", "IfExp", "Dict",
               "ListComp", "GeneratorExp", "Yield", "Compare", "Call",
diff --git a/setup.py b/setup.py
index 59cd83a9f..b16bc946a 100644
--- a/setup.py
+++ b/setup.py
@@ -48,7 +48,7 @@ def main():
         name='pytest',
         description='py.test: simple powerful testing with Python',
         long_description = long_description,
-        version='2.3.3',
+        version='2.3.4.dev1',
         url='http://pytest.org',
         license='MIT license',
         platforms=['unix', 'linux', 'osx', 'cygwin', 'win32'],