diff --git a/managed_vms/extending_runtime_compat/requirements.txt b/managed_vms/extending_runtime_compat/requirements.txt
index 632a1efabce..578ac166e65 100644
--- a/managed_vms/extending_runtime_compat/requirements.txt
+++ b/managed_vms/extending_runtime_compat/requirements.txt
@@ -1 +1 @@
-Flask==0.10.1
+Flask==1.0