diff --git a/.travis.yml b/.travis.yml
index e1529542..a85a4d06 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ env:
     - TOXENV=py26
     - TOXENV=py27
     - TOXENV=py32
+    - TOXENV=py33
 install:
     - pip install --quiet --use-mirrors tox
 script:
diff --git a/jedi/_compatibility.py b/jedi/_compatibility.py
index 9a704304..29aef154 100644
--- a/jedi/_compatibility.py
+++ b/jedi/_compatibility.py
@@ -7,11 +7,69 @@ Most of the code here is necessary to support Python 2.5. Once this dependency
 will be dropped, we'll get rid of most code.
 """
 import sys
+import imp
+import os
+try:
+    import importlib
+except:
+    pass
 
 is_py3k = sys.hexversion >= 0x03000000
-
+is_py33 = sys.hexversion >= 0x03030000
 is_py25 = sys.hexversion < 0x02060000
 
+def find_module_py33(string, path=None):
+    mod_info = (None, None, None)
+    loader = None
+    if path is not None:
+        # Check for the module in the specidied path
+        loader = importlib.machinery.PathFinder.find_module(string, path)
+    else:
+        # Check for the module in sys.path
+        loader = importlib.machinery.PathFinder.find_module(string, sys.path)
+        if loader is None:
+            # Fallback to find builtins
+            loader = importlib.find_loader(string)
+
+    if loader is None:
+        raise ImportError
+
+    try:
+        if (loader.is_package(string)):
+            mod_info = (None, os.path.dirname(loader.path), True)
+        else:
+            filename = loader.get_filename(string)
+            if filename and os.path.exists(filename):
+                mod_info = (open(filename, 'U'), filename, False)
+            else:
+                mod_info = (None, filename, False)
+    except AttributeError:
+        mod_info = (None, loader.load_module(string).__name__, False)
+
+    return mod_info
+
+def find_module_pre_py33(string, path=None):
+    mod_info = None
+    if path is None:
+        mod_info = imp.find_module(string)
+    else:
+        mod_info = imp.find_module(string, path)
+
+    return (mod_info[0], mod_info[1], mod_info[2][2] == imp.PKG_DIRECTORY)
+
+def find_module(string, path=None):
+    """Provides information about a module.
+
+    This function isolates the differences in importing libraries introduced with
+    python 3.3 on; it gets a module name and optionally a path. It will return a
+    tuple containin an open file for the module (if not builtin), the filename
+    or the name of the module if it is a builtin one and a boolean indicating
+    if the module is contained in a package."""
+    if is_py33:
+        return find_module_py33(string, path)
+    else:
+        return find_module_pre_py33(string, path)
+
 # next was defined in python 2.6, in python 3 obj.next won't be possible
 # anymore
 try:
diff --git a/jedi/cache.py b/jedi/cache.py
index 20805845..5d76f24e 100644
--- a/jedi/cache.py
+++ b/jedi/cache.py
@@ -21,6 +21,7 @@ from __future__ import with_statement
 import time
 import os
 import sys
+import hashlib
 try:
     import cPickle as pickle
 except:
@@ -221,7 +222,7 @@ def save_module(path, name, parser, pickling=True):
 
 class _ModulePickling(object):
 
-    version = 1
+    version = 2
     """
     Version number (integer) for file system cache.
 
@@ -312,7 +313,7 @@ class _ModulePickling(object):
         shutil.rmtree(self._cache_directory())
 
     def _get_hashed_path(self, path):
-        return self._get_path('%s.pkl' % hash(path))
+        return self._get_path('%s.pkl' % hashlib.md5(path.encode("utf-8")).hexdigest())
 
     def _get_path(self, file):
         dir = self._cache_directory()
diff --git a/jedi/imports.py b/jedi/imports.py
index 72a3d0f6..db72925f 100644
--- a/jedi/imports.py
+++ b/jedi/imports.py
@@ -5,9 +5,8 @@ any actual importing done. This module is about finding modules in the
 filesystem. This can be quite tricky sometimes, because Python imports are not
 always that simple.
 
-Currently the import process uses ``imp`` to find modules. In the future, it's
-a goal to use ``importlib`` for this purpose. There's a `pull request
-<https://github.com/davidhalter/jedi/pull/109>`_ for that.
+This module uses imp for python up to 3.2 and importlib for python 3.3 on; the
+correct implementation is delegated to _compatibility.
 
 This module also supports import autocompletion, which means to complete
 statements like ``from datetim`` (curser at the end would return ``datetime``).
@@ -17,10 +16,10 @@ from __future__ import with_statement
 
 import os
 import pkgutil
-import imp
 import sys
 import itertools
 
+from jedi._compatibility import find_module
 from jedi import modules
 from jedi import debug
 from jedi import parsing_representation as pr
@@ -238,20 +237,22 @@ class ImportPath(pr.Base):
 
             global imports_processed
             imports_processed += 1
+            importing = None
             if path is not None:
-                return imp.find_module(string, [path])
+                importing = find_module(string, [path])
             else:
                 debug.dbg('search_module', string, self.file_path)
                 # Override the sys.path. It works only good that way.
                 # Injecting the path directly into `find_module` did not work.
                 sys.path, temp = sys_path_mod, sys.path
                 try:
-                    i = imp.find_module(string)
+                    importing = find_module(string)
                 except ImportError:
                     sys.path = temp
                     raise
                 sys.path = temp
-                return i
+            
+            return importing
 
         if self.file_path:
             sys_path_mod = list(self.sys_path_with_modifications())
@@ -259,6 +260,9 @@ class ImportPath(pr.Base):
         else:
             sys_path_mod = list(modules.get_sys_path())
 
+        def module_not_found():
+            raise ModuleNotFound('The module you searched has not been found')
+
         current_namespace = (None, None, None)
         # now execute those paths
         rest = []
@@ -277,12 +281,14 @@ class ImportPath(pr.Base):
                 if current_namespace[1]:
                     rest = self.import_path[i:]
                 else:
-                    raise ModuleNotFound(
-                            'The module you searched has not been found')
+                    module_not_found()
+
+        if current_namespace == (None, None, False):
+            module_not_found()
 
         sys_path_mod.pop(0)  # TODO why is this here?
         path = current_namespace[1]
-        is_package_directory = current_namespace[2][2] == imp.PKG_DIRECTORY
+        is_package_directory = current_namespace[2]
 
         f = None
         if is_package_directory or current_namespace[0]:
diff --git a/jedi/parsing_representation.py b/jedi/parsing_representation.py
index 65210124..311f38ab 100644
--- a/jedi/parsing_representation.py
+++ b/jedi/parsing_representation.py
@@ -560,8 +560,10 @@ class Flow(Scope):
     @parent.setter
     def parent(self, value):
         self._parent = value
-        if self.next:
+        try:
             self.next.parent = value
+        except AttributeError:
+            return
 
     def get_code(self, first_indent=False, indention='    '):
         stmts = []
diff --git a/test/completion/std.py b/test/completion/std.py
index 0eec6367..c4ed8c5a 100644
--- a/test/completion/std.py
+++ b/test/completion/std.py
@@ -89,12 +89,3 @@ def huhu(db):
     """
     #? sqlite3.Connection()
     db
-
-# -----------------
-# various regression tests
-# -----------------
-
-#62
-import threading
-#? ['_Verbose', '_VERBOSE']
-threading._Verbose
diff --git a/tox.ini b/tox.ini
index 6dc16930..8fa50614 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py25, py26, py27, py32
+envlist = py25, py26, py27, py32, py33
 [testenv]
 deps =
     pytest