diff --git a/p5-CSS-Prepare/bin/cssprepare b/p5-CSS-Prepare/bin/cssprepare
index c490d89..b10ed0f 100755
--- a/p5-CSS-Prepare/bin/cssprepare
+++ b/p5-CSS-Prepare/bin/cssprepare
@@ -136,6 +136,9 @@ sub run_pipe {
         print {$pipe} $output;
         close $pipe;
         
+        # touch the pipe to confound anything caching based upon the mtime
+        utime undef, undef, $pipe;
+        
         # avoid dup signals
         sleep 1;
     }