diff --git a/src/environments/groupthm/groupthm.dtx b/src/environments/groupthm/groupthm.dtx
index daf2f59..1af511b 100644
--- a/src/environments/groupthm/groupthm.dtx
+++ b/src/environments/groupthm/groupthm.dtx
@@ -2697,7 +2697,7 @@
     \iow_now:cx { @auxout }
       {
         \token_to_str:N \ExplSyntaxOn
-        \int_set:Nn \g_@@_cache_version_aux_int
+        \int_gset:Nn \g_@@_cache_version_aux_int
           { \int_use:N \g_@@_cache_version_document_int }
         \token_to_str:N \ExplSyntaxOff
       }