diff --git a/README.rst b/README.rst
index be3b349..d7ec041 100644
--- a/README.rst
+++ b/README.rst
@@ -608,6 +608,8 @@ new API in version 1.0.x
 
 Changelog
 ---------
+-  1.7.2 [#186] Get effective_url in tornado (thanks @mvschaik), [#187]
+   Set request_time on Response object in tornado (thanks @abhinav).
 -  1.7.1 [#183] Patch ``fetch_impl`` instead of the entire HTTPClient
    class for Tornado (thanks @abhinav).
 -  1.7.0 [#177] Properly support coroutine/generator decoration. [#178]
diff --git a/setup.py b/setup.py
index 30e70fc..f254683 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@ except Exception:
 
 setup(
     name='vcrpy',
-    version='1.7.1',
+    version='1.7.2',
     description=(
         "Automatically mock your HTTP interactions to simplify and "
         "speed up testing"
diff --git a/vcr/cassette.py b/vcr/cassette.py
index a22f930..ff63492 100644
--- a/vcr/cassette.py
+++ b/vcr/cassette.py
@@ -47,14 +47,16 @@ class CassetteContextDecorator(object):
 
     def _patch_generator(self, cassette):
         with contextlib.ExitStack() as exit_stack:
-            for patcher in CassettePatcherBuilder(cassette).build:
-                exit_stack.enter_contextpatcher
+            for patcher in CassettePatcherBuilder(cassette).build():
+                exit_stack.enter_context(patcher)
             log_format = '{action} context for cassette at {path}.'
             log.debug(log_format.format(
-                cassette._path
+                action="Entering", path=cassette._path
             ))
             yield cassette
-            log.debug('Exiting context for cassette at {0}.'.format(cassette._path))
+            log.debug(log_format.format(
+                action="Exiting", path=cassette._path
+            ))
             # TODO(@IvanMalison): Hmmm. it kind of feels like this should be
             # somewhere else.
             cassette._save()