diff --git a/altair/vegalite/v2/examples/select_detail.py b/altair/vegalite/v2/examples/select_detail.py
index 84bb62c80..250541039 100644
--- a/altair/vegalite/v2/examples/select_detail.py
+++ b/altair/vegalite/v2/examples/select_detail.py
@@ -33,7 +33,7 @@
                           index=pd.RangeIndex(0, n_times, name='time'))
 
 # Melt the wide-form timeseries into a long-form view
-timeseries = timeseries.reset_index().melt('time')
+timeseries = timeseries.stack().to_frame('value').reset_index()
 
 # Merge the (x, y) metadata into the long-form view
 data = pd.merge(timeseries, locations, on='id')