diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 62eae03..57c5582 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -247,7 +247,7 @@
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1588413568604" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1588413752199" />
     <property name="go.gopath.indexing.explicitly.defined" value="true" />
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="nodejs_npm_path_reset_for_default_project" value="true" />
diff --git a/serve.py b/serve.py
index b0f3e75..0de69b8 100644
--- a/serve.py
+++ b/serve.py
@@ -144,7 +144,10 @@ def predict(job, seq):
 
 	df = read_csv('./data/' + job + '.csv', header=0, index_col=0, squeeze=True)
 	df = df.tail(batch_size * 2 - 1)
-	df = df.append(data, ignore_index=True)
+	df.loc[df.shape[0]] = {
+		'seq': seq,
+		'value': 0,
+	}
 
 	print(df[0].shape)