diff --git a/matrix.csv b/matrix.csv
index 93ea4e9..31c8960 100644
--- a/matrix.csv
+++ b/matrix.csv
@@ -46,4 +46,5 @@ ubuntu,18.04,develop,git,3
 ubuntu,18.04,2019.2,stable,3
 ubuntu,18.04,2019.2,stable,2
 ubuntu,18.04,2018.3,stable,2
+ubuntu,16.04,2018.3,stable,2
 ubuntu,16.04,2017.7,stable,2