diff --git a/test/e2e/clusterctl_upgrade.go b/test/e2e/clusterctl_upgrade.go
index 781a086cdfd2..b38677dc0222 100644
--- a/test/e2e/clusterctl_upgrade.go
+++ b/test/e2e/clusterctl_upgrade.go
@@ -24,6 +24,7 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
+	"sort"
 	"strings"
 
 	. "github.com/onsi/ginkgo/v2"
@@ -400,6 +401,11 @@ func ClusterctlUpgradeSpec(ctx context.Context, inputGetter func() ClusterctlUpg
 			Kind:  machineCRD.Spec.Names.ListKind,
 		}
 
+		// Sort the machineCRD.Spec.Versions slice
+		sort.Slice(machineCRD.Spec.Versions, func(i, j int) bool {
+			return machineCRD.Spec.Versions[i].Name < machineCRD.Spec.Versions[j].Name
+		})
+
 		// Pick the first served version
 		for _, gvk := range machineCRD.Spec.Versions {
 			if gvk.Served {