diff --git a/cmd/main.go b/cmd/main.go
index 127cd050..e18a121b 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -269,6 +269,11 @@ func run(ctx context.Context) error {
 	// add commandline flags for logging
 	klogFlags := flag.NewFlagSet("klog", flag.ExitOnError)
 	klog.InitFlags(klogFlags)
+	// Opt into the new klog behavior so that -stderrthreshold is honored even
+	// when -logtostderr=true (the default).
+	// Ref: kubernetes/klog#212, kubernetes/klog#432
+	klogFlags.Set("legacy_stderr_threshold_behavior", "false") //nolint:errcheck
+	klogFlags.Set("stderrthreshold", "INFO")                   //nolint:errcheck
 
 	klogFlags.Set("logtostderr", "false")
 	klogFlags.Set("log_file", filepath.Join(os.TempDir(), "kubectl-ai.log"))
diff --git a/go.mod b/go.mod
index 2f398cb3..5ea2c4e3 100644
--- a/go.mod
+++ b/go.mod
@@ -24,7 +24,7 @@ require (
 	k8s.io/api v0.34.2
 	k8s.io/apimachinery v0.34.2
 	k8s.io/client-go v0.34.2
-	k8s.io/klog/v2 v2.130.1
+	k8s.io/klog/v2 v2.140.0
 	mvdan.cc/sh/v3 v3.11.0
 	sigs.k8s.io/yaml v1.6.0
 )
diff --git a/go.sum b/go.sum
index 857608ae..18023a5e 100644
--- a/go.sum
+++ b/go.sum
@@ -385,8 +385,8 @@ k8s.io/apimachinery v0.34.2 h1:zQ12Uk3eMHPxrsbUJgNF8bTauTVR2WgqJsTmwTE/NW4=
 k8s.io/apimachinery v0.34.2/go.mod h1:/GwIlEcWuTX9zKIg2mbw0LRFIsXwrfoVxn+ef0X13lw=
 k8s.io/client-go v0.34.2 h1:Co6XiknN+uUZqiddlfAjT68184/37PS4QAzYvQvDR8M=
 k8s.io/client-go v0.34.2/go.mod h1:2VYDl1XXJsdcAxw7BenFslRQX28Dxz91U9MWKjX97fE=
-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 v0.0.0-20250710124328-f3f2b991d03b h1:MloQ9/bdJyIu9lb1PzujOPolHyvO06MXG5TUIj2mNAA=
 k8s.io/kube-openapi v0.0.0-20250710124328-f3f2b991d03b/go.mod h1:UZ2yyWbFTpuhSbFhv24aGNOdoRdJZgsIObGBUaYVsts=
 k8s.io/utils v0.0.0-20250604170112-4c0f3b243397 h1:hwvWFiBzdWw1FhfY1FooPn3kzWuJ8tmbZBHi4zVsl1Y=
diff --git a/kubectl-utils/cmd/kubectl-expect/main.go b/kubectl-utils/cmd/kubectl-expect/main.go
index 006af1bd..30388276 100644
--- a/kubectl-utils/cmd/kubectl-expect/main.go
+++ b/kubectl-utils/cmd/kubectl-expect/main.go
@@ -49,6 +49,11 @@ func run(ctx context.Context) error {
 	pflag.StringVar(&kubeconfig, "kubeconfig", kubeconfig, "Path to the kubeconfig file to use for CLI requests.")
 
 	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
+	flag.Set("legacy_stderr_threshold_behavior", "false") //nolint:errcheck
+	flag.Set("stderrthreshold", "INFO")                   //nolint:errcheck
 	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
 	pflag.Parse()
 
diff --git a/kubectl-utils/go.mod b/kubectl-utils/go.mod
index dc882453..02b33eeb 100644
--- a/kubectl-utils/go.mod
+++ b/kubectl-utils/go.mod
@@ -11,7 +11,7 @@ require (
 	google.golang.org/protobuf v1.36.6
 	k8s.io/apimachinery v0.33.0
 	k8s.io/client-go v0.33.0
-	k8s.io/klog/v2 v2.130.1
+	k8s.io/klog/v2 v2.140.0
 )
 
 require (
diff --git a/kubectl-utils/go.sum b/kubectl-utils/go.sum
index 42e1b46d..a13bb6c5 100644
--- a/kubectl-utils/go.sum
+++ b/kubectl-utils/go.sum
@@ -153,8 +153,8 @@ k8s.io/apimachinery v0.33.0 h1:1a6kHrJxb2hs4t8EE5wuR/WxKDwGN1FKH3JvDtA0CIQ=
 k8s.io/apimachinery v0.33.0/go.mod h1:BHW0YOu7n22fFv/JkYOEfkUYNRN0fj0BlvMFWA7b+SM=
 k8s.io/client-go v0.33.0 h1:UASR0sAYVUzs2kYuKn/ZakZlcs2bEHaizrrHUZg0G98=
 k8s.io/client-go v0.33.0/go.mod h1:kGkd+l/gNGg8GYWAPr0xF1rRKvVWvzh9vmZAMXtaKOg=
-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/utils v0.0.0-20241104100929-3ea5e8cea738 h1:M3sRQVHv7vB20Xc2ybTt7ODCeFj6JSWYFzOFnYeS6Ro=