diff --git a/frigate-container.nix b/frigate-container.nix
index 9b3b56d..6257414 100644
--- a/frigate-container.nix
+++ b/frigate-container.nix
@@ -127,7 +127,7 @@ in {
     };
 
     detectors = mkOption {
-      type = attrsOf (attrsOf any);
+      type = attrsOf (attrsOf str);
       default = { };
     };