diff --git a/config/settings/__init__.py b/config/settings/__init__.py
index aa5d39d..acefb7a 100644
--- a/config/settings/__init__.py
+++ b/config/settings/__init__.py
@@ -357,4 +357,4 @@
 AUTHBROKER_CLIENT_ID = env.str('AUTHBROKER_CLIENT_ID')
 AUTHBROKER_CLIENT_SECRET = env.str('AUTHBROKER_CLIENT_SECRET')
 
-SILENCED_SYSTEM_CHECKS = ['captcha.recaptcha_test_key_error']
\ No newline at end of file
+SILENCED_SYSTEM_CHECKS = ['captcha.recaptcha_test_key_error']
diff --git a/manifest.yml b/manifest.yml
index 03fcdaa..1ffbb6a 100644
--- a/manifest.yml
+++ b/manifest.yml
@@ -2,4 +2,3 @@
 applications:
   - buildpacks:
       - https://github.com/cloudfoundry/python-buildpack.git#v1.8.0
-    stack: cflinuxfs4
\ No newline at end of file