diff --git a/morph/lib/issuer-aws.nix b/morph/lib/issuer-aws.nix
index a66ab72addd43da1feb96bdd86d46312ec327fd3..86687a0fae88536fb0df080fe9aadf17def6450d 100644
--- a/morph/lib/issuer-aws.nix
+++ b/morph/lib/issuer-aws.nix
@@ -17,4 +17,10 @@
   # morph-supplied name.  See also
   # <https://github.com/DBCDK/morph/issues/146>.
   networking.hostName = name;
+
+  # Clean up packages after a while
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+  };
 }