diff --git a/Tools/ANSYS/variants/variants.overlay_merlin b/Tools/ANSYS/variants/variants.overlay_merlin
new file mode 100644
index 0000000..ed6f8a8
--- /dev/null
+++ b/Tools/ANSYS/variants/variants.overlay_merlin
@@ -0,0 +1,4 @@
+ANSYS/2019R3    unstable
+ANSYS/2020R2    unstable
+ANSYS/2021R1    unstable
+ANSYS/2021R2    unstable