diff --git a/blocks_to_transfers/convert_blocks.py b/blocks_to_transfers/convert_blocks.py
index cf8815b..2b0ca2d 100644
--- a/blocks_to_transfers/convert_blocks.py
+++ b/blocks_to_transfers/convert_blocks.py
@@ -41,7 +41,7 @@ def group_trips(gtfs):
 
     for trip in sorted(gtfs.trips.values(),
                        key=lambda trip: trip.first_departure):
-        if not trip.block_id:
+        if (not trip.block_id) or (trip.stop_shape is None):
             continue
 
         if len(gtfs.stop_times.get(trip.trip_id, [])) < 2:
diff --git a/dependency_info.py b/dependency_info.py
index 31d15c3..746ba67 100644
--- a/dependency_info.py
+++ b/dependency_info.py
@@ -1 +1 @@
-py_gtfs_loader = '0.1.12'
+py_gtfs_loader = '0.1.15'
diff --git a/setup.py b/setup.py
index 12ecb39..0108909 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 import dependency_info
 
 setup(name='GTFS-blocks-to-transfers',
-      version='1.7.0',
+      version='1.7.1',
       description='Convert GTFS blocks to trip-to-trip transfers',
       url='https://github.com/TransitApp/GTFS-blocks-to-transfers',
       author='Nicholas Paun',