diff --git a/roles/matrix-bot-go-neb/templates/config.yaml.j2 b/roles/matrix-bot-go-neb/templates/config.yaml.j2
index 4dfa18ca5..c72dbf8df 100644
--- a/roles/matrix-bot-go-neb/templates/config.yaml.j2
+++ b/roles/matrix-bot-go-neb/templates/config.yaml.j2
@@ -19,14 +19,14 @@
 # See the docs for /configureClient for the full list of options:
 # https://matrix-org.github.io/go-neb/pkg/github.com/matrix-org/go-neb/api/index.html#ClientConfig
 clients:
-  {{ matrix_bot_go_neb_clients }}
+  {{ matrix_bot_go_neb_clients|to_json }}
 
 # The list of realms which Go-NEB is aware of.
 # Delete or modify this list as appropriate.
 # See the docs for /configureAuthRealm for the full list of options:
 # https://matrix-org.github.io/go-neb/pkg/github.com/matrix-org/go-neb/api/index.html#ConfigureAuthRealmRequest
 realms:
-  {{ matrix_bot_go_neb_realms }}
+  {{ matrix_bot_go_neb_realms|to_json }}
 
 # The list of *authenticated* sessions which Go-NEB is aware of.
 # Delete or modify this list as appropriate.
@@ -34,11 +34,11 @@ realms:
 # which maps to this section.
 # https://matrix-org.github.io/go-neb/pkg/github.com/matrix-org/go-neb/api/index.html#Session
 sessions:
-  {{ matrix_bot_go_neb_sessions }}
+  {{ matrix_bot_go_neb_sessions|to_json }}
 
 # The list of services which Go-NEB is aware of.
 # Delete or modify this list as appropriate.
 # See the docs for /configureService for the full list of options:
 # https://matrix-org.github.io/go-neb/pkg/github.com/matrix-org/go-neb/api/index.html#ConfigureServiceRequest
 services:
-  {{ matrix_bot_go_neb_services }}
+  {{ matrix_bot_go_neb_services|to_json }}