diff --git a/Tools/gnuplot/files/variants b/Tools/gnuplot/files/variants
index 7a89952..dcb858d 100644
--- a/Tools/gnuplot/files/variants
+++ b/Tools/gnuplot/files/variants
@@ -5,3 +5,4 @@ gnuplot/5.2.4	stable
 gnuplot/5.2.6	stable
 gnuplot/5.2.7	stable
 gnuplot/5.2.8	stable
+gnuplot/5.4.0	unstable