diff --git a/hosts/boreal/default.nix b/hosts/boreal/default.nix
index f1b3d81..8116755 100644
--- a/hosts/boreal/default.nix
+++ b/hosts/boreal/default.nix
@@ -64,7 +64,7 @@ in
         "/home/alarsyo/Downloads"
 
         # Rust builds using half my storage capacity
-        "/home/alarsyo/*/target"
+        "/home/alarsyo/**/target"
         "/home/alarsyo/work/rust/build"
 
         # don't backup nixpkgs
diff --git a/hosts/zephyrus/default.nix b/hosts/zephyrus/default.nix
index facb295..ad9083e 100644
--- a/hosts/zephyrus/default.nix
+++ b/hosts/zephyrus/default.nix
@@ -57,7 +57,7 @@ in
         "/home/alarsyo/Downloads"
 
         # Rust builds using half my storage capacity
-        "/home/alarsyo/*/target"
+        "/home/alarsyo/**/target"
         "/home/alarsyo/work/rust/build"
 
         # don't backup nixpkgs