diff --git a/services/arr/recyclarr.nix b/services/arr/recyclarr.nix
index ebddbce..088388b 100644
--- a/services/arr/recyclarr.nix
+++ b/services/arr/recyclarr.nix
@@ -46,6 +46,11 @@ in
       radarr.movies = {
         base_url = "http://localhost:${builtins.toString service_configs.ports.private.radarr.port}";
 
+        # Recyclarr is the sole authority for custom formats and scores.
+        # Overwrite any manually-created CFs and delete stale ones.
+        replace_existing_custom_formats = true;
+        delete_old_custom_formats = true;
+
         include = [
           { template = "radarr-quality-definition-movie"; }
           { template = "radarr-quality-profile-remux-web-2160p"; }
@@ -119,6 +124,11 @@ in
       sonarr.series = {
         base_url = "http://localhost:${builtins.toString service_configs.ports.private.sonarr.port}";
 
+        # Recyclarr is the sole authority for custom formats and scores.
+        # Overwrite any manually-created CFs and delete stale ones.
+        replace_existing_custom_formats = true;
+        delete_old_custom_formats = true;
+
         include = [
           { template = "sonarr-quality-definition-series"; }
           { template = "sonarr-v4-quality-profile-web-2160p"; }