diff --git a/cmd/tidb-backup-manager/main.go b/cmd/tidb-backup-manager/main.go
index 03df371f5c..c2487c6a98 100644
--- a/cmd/tidb-backup-manager/main.go
+++ b/cmd/tidb-backup-manager/main.go
@@ -15,6 +15,8 @@
 package main
 
 import (
+	"flag"
+	"fmt"
 	"os"
 
 	"k8s.io/klog/v2"
@@ -24,6 +26,17 @@ import (
 
 func main() {
 	klog.InitFlags(nil)
+	// Opt into the new klog behavior so that -stderrthreshold is honored even
+	// when -logtostderr=true (the default).
+	// Ref: kubernetes/klog#212, kubernetes/klog#432
+	if err := flag.Set("legacy_stderr_threshold_behavior", "false"); err != nil {
+		fmt.Fprintf(os.Stderr, "failed to set legacy_stderr_threshold_behavior: %v\n", err)
+		os.Exit(1)
+	}
+	if err := flag.Set("stderrthreshold", "INFO"); err != nil {
+		fmt.Fprintf(os.Stderr, "failed to set stderrthreshold: %v\n", err)
+		os.Exit(1)
+	}
 	if err := app.Run(); err != nil {
 		os.Exit(1)
 	}
diff --git a/go.mod b/go.mod
index b0cffa7262..d1beab35ee 100644
--- a/go.mod
+++ b/go.mod
@@ -18,7 +18,7 @@ require (
 	k8s.io/client-go v0.32.13
 	k8s.io/component-base v0.32.13
 	k8s.io/gengo/v2 v2.0.0-20250207200755-1244d31929d7
-	k8s.io/klog/v2 v2.130.1
+	k8s.io/klog/v2 v2.140.0
 	k8s.io/kube-openapi v0.0.0-20250318190949-c8a335a9a2ff
 	k8s.io/kubectl v0.32.13
 	k8s.io/utils v0.0.0-20241104100929-3ea5e8cea738
diff --git a/go.sum b/go.sum
index 931924dd5d..f5a7b716e8 100644
--- a/go.sum
+++ b/go.sum
@@ -810,8 +810,8 @@ k8s.io/component-base v0.32.13 h1:QTroT4xOtYXc8ySp7Wvj5llxDNxz16YoG5Pw3zJBMds=
 k8s.io/component-base v0.32.13/go.mod h1:hfuVb9GlAuoIXRimoph+0e862qEwxRA7h+6oOIFelCE=
 k8s.io/gengo/v2 v2.0.0-20250207200755-1244d31929d7 h1:2OX19X59HxDprNCVrWi6jb7LW1PoqTlYqEq5H2oetog=
 k8s.io/gengo/v2 v2.0.0-20250207200755-1244d31929d7/go.mod h1:EJykeLsmFC60UQbYJezXkEsG2FLrt0GPNkU5iK5GWxU=
-k8s.io/klog/v2 v2.130.1 h1:n9Xl7H1Xvksem4KFG4PYbdQCQxqc/tTUyrgXaOhHSzk=
-k8s.io/klog/v2 v2.130.1/go.mod h1:3Jpz1GvMt720eyJH1ckRHK1EDfpxISzJ7I9OYgaDtPE=
+k8s.io/klog/v2 v2.140.0 h1:Tf+J3AH7xnUzZyVVXhTgGhEKnFqye14aadWv7bzXdzc=
+k8s.io/klog/v2 v2.140.0/go.mod h1:o+/RWfJ6PwpnFn7OyAG3QnO47BFsymfEfrz6XyYSSp0=
 k8s.io/kube-openapi v0.0.0-20250318190949-c8a335a9a2ff h1:/usPimJzUKKu+m+TE36gUyGcf03XZEP0ZIKgKj35LS4=
 k8s.io/kube-openapi v0.0.0-20250318190949-c8a335a9a2ff/go.mod h1:5jIi+8yX4RIb8wk3XwBo5Pq2ccx4FP10ohkbSKCZoK8=
 k8s.io/kubectl v0.32.13 h1:SgKMRUwpRIR+8DHPphU/wDskNsj0Jtf6bEVyuus+FtI=