diff --git a/requests/sessions.py b/requests/sessions.py
index 3d73affd..28b5da9b 100644
--- a/requests/sessions.py
+++ b/requests/sessions.py
@@ -586,7 +586,7 @@ class Session(SessionRedirectMixin):
             history.insert(0, r)
             # Get the last request made
             r = history.pop()
-            r.history = tuple(history)
+            r.history = history
 
         return r
 
diff --git a/test_requests.py b/test_requests.py
index a2b37e81..13b9d64c 100755
--- a/test_requests.py
+++ b/test_requests.py
@@ -214,6 +214,16 @@ class RequestsTestCase(unittest.TestCase):
         req_urls = [r.request.url for r in resp.history]
         assert urls == req_urls
 
+    def test_history_is_always_a_list(self):
+        """
+        Show that even with redirects, Response.history is always a list.
+        """
+        resp = requests.get(httpbin('get'))
+        assert isinstance(resp.history, list)
+        resp = requests.get(httpbin('redirect/1'))
+        assert isinstance(resp.history, list)
+        assert not isinstance(resp.history, tuple)
+
     def test_headers_on_session_with_None_are_not_sent(self):
         """Do not send headers in Session.headers with None values."""
         ses = requests.Session()