diff --git a/cmd/flux/check.go b/cmd/flux/check.go
index 6159e3ef..b7108941 100644
--- a/cmd/flux/check.go
+++ b/cmd/flux/check.go
@@ -60,7 +60,7 @@ type checkFlags struct {
 }
 
 var kubernetesConstraints = []string{
-	">=1.26.0-0",
+	">=1.28.0-0",
 }
 
 var checkArgs checkFlags
diff --git a/cmd/flux/testdata/check/check_pre.golden b/cmd/flux/testdata/check/check_pre.golden
index 9b097d1e..312f6861 100644
--- a/cmd/flux/testdata/check/check_pre.golden
+++ b/cmd/flux/testdata/check/check_pre.golden
@@ -1,3 +1,3 @@
 ► checking prerequisites
-✔ Kubernetes {{ .serverVersion }} >=1.26.0-0
+✔ Kubernetes {{ .serverVersion }} >=1.28.0-0
 ✔ prerequisites checks passed