diff --git a/predicthq/endpoints/schemas.py b/predicthq/endpoints/schemas.py
index 33bee87..48ab0e2 100644
--- a/predicthq/endpoints/schemas.py
+++ b/predicthq/endpoints/schemas.py
@@ -125,8 +125,8 @@ class Place(Model):
     class Options:
         serialize_when_none = False
 
-    scope = ListType(IntType)
-    exact = ListType(IntType)
+    scope = ListType(StringType)
+    exact = ListType(StringType)
 
 
 class DateTimeRange(Model):
diff --git a/predicthq/endpoints/v1/events/schemas.py b/predicthq/endpoints/v1/events/schemas.py
index 0956624..1b715a6 100644
--- a/predicthq/endpoints/v1/events/schemas.py
+++ b/predicthq/endpoints/v1/events/schemas.py
@@ -69,7 +69,7 @@ class TopEventsSearchParams(SortableMixin, Model):
 class CalendarParams(SearchParams):
 
     top_events = ModelType(TopEventsSearchParams)
-    view = StringType(choices=('active',))
+    view = StringType(choices=('active', 'start'))
 
 
 class CalendarDay(Model):
diff --git a/predicthq/endpoints/v1/signals/schemas.py b/predicthq/endpoints/v1/signals/schemas.py
index 77c1f1f..6c3081e 100644
--- a/predicthq/endpoints/v1/signals/schemas.py
+++ b/predicthq/endpoints/v1/signals/schemas.py
@@ -4,7 +4,7 @@
 from schematics.transforms import blacklist, wholelist, whitelist
 
 from predicthq.endpoints.schemas import Model, StringType, ListType, ModelType, DateTimeType, ResultSet, ResultType, SortableMixin, FloatType, IntType, DictType, \
-    PaginatedMixin, DateTimeRange, StringListType, StringModelType, Area, BooleanType, DateType
+    PaginatedMixin, DateTimeRange, StringListType, StringModelType, Area, BooleanType, DateType, Place
 
 
 class SignalsSearchParams(SortableMixin, Model):
@@ -94,7 +94,7 @@ class SignalResultSet(ResultSet):
 class DataPoint(Model):
 
     uid = StringType(required=True)
-    date = DateTimeType(requird=True)
+    date = DateTimeType(required=True)
     latitude = FloatType(min_value=-90, max_value=90, required=True)
     longitude = FloatType(min_value=-180, max_value=180, required=True)
     initiated = DateTimeType()
@@ -202,4 +202,6 @@ class Options:
     significance = IntType(min_value=0, max_value=100)
     lead = BooleanType(default=False)
     span = BooleanType(default=False)
+    place = ModelType(Place)
+
     # @todo: Support custom dimensions from signal
diff --git a/setup.py b/setup.py
index c231c9a..629cecd 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@ def read(*parts):
     install_requires=[
         "six>=1.9.0",
         "requests>=2.7.0",
-        "schematics>=2.0.0.dev2",
+        "schematics==2.0.0.dev2",
         "python-dateutil>=2.4.2",
         "pytz>=2015.4",
     ],