diff --git a/configuration.nix b/configuration.nix
index 0ce75a6..8ee6713 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -34,7 +34,7 @@
   nix = {
     gc = {
       automatic = true;
-      options = "--delete-older-than 7d";
+      options = "--delete-older-than 14d";
       dates = "14:30";
     };
     extraOptions = ''