diff --git a/06_structured/labs/serving/application/requirements.txt b/06_structured/labs/serving/application/requirements.txt
old mode 100755
new mode 100644
index 29411ec2..26c15cd6
--- a/06_structured/labs/serving/application/requirements.txt
+++ b/06_structured/labs/serving/application/requirements.txt
@@ -1,2 +1,2 @@
-Flask==0.12.1
+Flask==1.0
 google-api-python-client==1.6.2