diff --git a/backend-a/manifest.yml b/backend-a/manifest.yml
index ec36ad8..e5b1aec 100644
--- a/backend-a/manifest.yml
+++ b/backend-a/manifest.yml
@@ -4,7 +4,6 @@ applications:
     memory: 32M
     disk_quota: 32M
     buildpack: go_buildpack
-    stack: cflinuxfs3
     env:
       GOPACKAGENAME: example-apps/cats-and-dogs-with-service-discovery/backend-a
       CATS_PORTS: 7007,7008,7009
diff --git a/backend-b/manifest.yml b/backend-b/manifest.yml
index 8d71d90..6af1653 100644
--- a/backend-b/manifest.yml
+++ b/backend-b/manifest.yml
@@ -4,7 +4,6 @@ applications:
     memory: 32M
     disk_quota: 32M
     buildpack: go_buildpack
-    stack: cflinuxfs3
     env:
       GOPACKAGENAME: example-apps/cats-and-dogs-with-service-discovery/backend-b
       CATS_PORTS: 7007,7008,7009
diff --git a/backend/manifest.yml b/backend/manifest.yml
index 245a993..8b23247 100644
--- a/backend/manifest.yml
+++ b/backend/manifest.yml
@@ -4,7 +4,6 @@ applications:
     memory: 32M
     disk_quota: 32M
     buildpack: go_buildpack
-    stack: cflinuxfs3
     env:
       GOPACKAGENAME: example-apps/cats-and-dogs/backend
       CATS_PORTS: 7007,7008,7009
diff --git a/frontend/manifest.yml b/frontend/manifest.yml
index 413b4c4..fb3fd3c 100644
--- a/frontend/manifest.yml
+++ b/frontend/manifest.yml
@@ -4,6 +4,5 @@ applications:
     memory: 32M
     disk_quota: 32M
     buildpack: go_buildpack
-    stack: cflinuxfs3
     env:
       GOPACKAGENAME: example-apps/cats-and-dogs/frontend