diff --git a/1-HelloWorld/app.yaml b/1-HelloWorld/app.yaml
index f43ec65..d17326c 100644
--- a/1-HelloWorld/app.yaml
+++ b/1-HelloWorld/app.yaml
@@ -13,3 +13,5 @@
 # limitations under the License.
 
 runtime: python37
+automatic_scaling:
+  max_instances: 2
diff --git a/2-HelloUser/app.yaml b/2-HelloUser/app.yaml
index f43ec65..d17326c 100644
--- a/2-HelloUser/app.yaml
+++ b/2-HelloUser/app.yaml
@@ -13,3 +13,5 @@
 # limitations under the License.
 
 runtime: python37
+automatic_scaling:
+  max_instances: 2
diff --git a/3-HelloVerifiedUser/app.yaml b/3-HelloVerifiedUser/app.yaml
index f43ec65..d17326c 100644
--- a/3-HelloVerifiedUser/app.yaml
+++ b/3-HelloVerifiedUser/app.yaml
@@ -13,3 +13,5 @@
 # limitations under the License.
 
 runtime: python37
+automatic_scaling:
+  max_instances: 2