diff --git a/plotly/graph_objs/graph_objs.py b/plotly/graph_objs/graph_objs.py
index f472475c5e6..392ddb2efc2 100644
--- a/plotly/graph_objs/graph_objs.py
+++ b/plotly/graph_objs/graph_objs.py
@@ -1213,8 +1213,8 @@ def append_trace(self, trace, row, col):
                                 .format(r=row, c=col))
             trace['xaxis'] = ref[0]
             trace['yaxis'] = ref[1]
-        self['data'] += [trace]
-
+        #self['data'] += [trace]
+        self['data'].append(trace)
 
 class Font(PlotlyDict):
     """
diff --git a/plotly/version.py b/plotly/version.py
index 4c354e07079..4a1dc847b1d 100644
--- a/plotly/version.py
+++ b/plotly/version.py
@@ -1 +1 @@
-__version__ = '2.0.5'
+__version__ = '2.0.5a'