diff --git a/modules/home/default.nix b/modules/home/default.nix
index 548d8f7..33feddf 100644
--- a/modules/home/default.nix
+++ b/modules/home/default.nix
@@ -64,6 +64,11 @@
   xdg.userDirs = {
     enable = lib.mkDefault true;
     createDirectories = lib.mkDefault true;
+    # Pinned: HM 26.05 flips the default to false (and warns on every eval
+    # for older stateVersions). Keep exporting XDG_*_DIR into the session —
+    # scripts and non-glib apps read the vars, and pinning gives every
+    # downstream the same behavior regardless of its stateVersion.
+    setSessionVariables = lib.mkDefault true;
   };
 
   home.stateVersion = lib.mkDefault "26.05";