diff --git a/playbooks/roles/edxapp/defaults/main.yml b/playbooks/roles/edxapp/defaults/main.yml
index 5d25ca7b6f6..c56da030423 100644
--- a/playbooks/roles/edxapp/defaults/main.yml
+++ b/playbooks/roles/edxapp/defaults/main.yml
@@ -203,6 +203,15 @@ EDXAPP_ENABLE_AUTO_AUTH: false
 # Settings for enabling and configuring third party authorization
 EDXAPP_ENABLE_THIRD_PARTY_AUTH: true
 EDXAPP_ENABLE_OAUTH2_PROVIDER: false
+EDXAPP_THIRD_PARTY_AUTH_BACKENDS:
+  - social_core.backends.google.GoogleOAuth2
+  - social_core.backends.linkedin.LinkedinOAuth2
+  - social_core.backends.facebook.FacebookOAuth2
+  - social_core.backends.azuread.AzureADOAuth2
+  - third_party_auth.appleid.AppleIdAuth
+  - third_party_auth.identityserver3.IdentityServer3
+  - third_party_auth.saml.SAMLAuthBackend
+  - third_party_auth.lti.LTIAuthBackend
 
 EDXAPP_ENABLE_MOBILE_REST_API: false
 
@@ -1506,6 +1515,7 @@ lms_env_config:
   OAUTH_EXPIRE_PUBLIC_CLIENT_DAYS: "{{ EDXAPP_OAUTH_EXPIRE_PUBLIC_CLIENT_DAYS }}"
   OAUTH_DELETE_EXPIRED: "{{ EDXAPP_OAUTH_DELETE_EXPIRED }}"
   PAID_COURSE_REGISTRATION_CURRENCY: "{{ EDXAPP_PAID_COURSE_REGISTRATION_CURRENCY }}"
+  THIRD_PARTY_AUTH_BACKENDS: "{{ EDXAPP_THIRD_PARTY_AUTH_BACKENDS }}"
   GIT_REPO_DIR: "{{ EDXAPP_GIT_REPO_DIR }}"
   SITE_NAME:  "{{ EDXAPP_LMS_SITE_NAME }}"
   HTTPS: "{{ EDXAPP_LMS_HTTPS }}"