diff --git a/helpers/matrix.yml b/helpers/matrix.yml
index 749b09cfa..85d7dfe6a 100644
--- a/helpers/matrix.yml
+++ b/helpers/matrix.yml
@@ -40,6 +40,6 @@ APM_SERVER_SUITE:
   - security
   - upgrade
 KUBERNETES_VERSION:
-  - "1.18"
   - "1.19"
   - "1.20"
+  - "1.21"