1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 662d8bf474..ea0846c8f1 100644
--- a/internal.h
+++ b/internal.h
@@ -187,6 +187,7 @@ struct rb_execarg {
     VALUE rlimit_limits; /* Qfalse or [[rtype, softlim, hardlim], ...] */
     mode_t umask_mask;
     int close_others_maxhint;
+    VALUE env_modification; /* Qfalse or [[k1,v1], ...] */
     VALUE chdir_dir;
 };