gistfile1.diff

diff --git a/requests/models.py b/requests/models.py
index 62aeb9c..1104604 100644
--- a/requests/models.py
+++ b/requests/models.py
@@ -299,7 +299,6 @@ class Request(object):
             r.history = history
 
         self.response = r
-        self.response.request = self
 
     @staticmethod
     def _encode_params(data):
@@ -623,7 +622,9 @@ class Request(object):
                     raise
 
             # Response manipulation hook.
+            self.response.request = self
             self.response = dispatch_hook('response', self.hooks, self.response)
+            self.response.request = None
 
             # Post-request hook.
             r = dispatch_hook('post_request', self.hooks, self)