diff --git a/docker/agent.Dockerfile b/docker/agent.Dockerfile
index be27239..e63245a 100644
--- a/docker/agent.Dockerfile
+++ b/docker/agent.Dockerfile
@@ -23,7 +23,7 @@ RUN CGO_ENABLED=0 GOOS=linux GOARCH=$TARGETARCH go build -ldflags "-s -w" -o kco
 FROM ${MX_SMI_IMAGE} AS metax-tools
 
 # runner
-FROM m.daocloud.io/docker.io/ubuntu:24.04
+FROM m.daocloud.io/docker.io/ubuntu:26.04
 
 WORKDIR /app
 
diff --git a/docker/kcover.Dockerfile b/docker/kcover.Dockerfile
index 69a7579..9d07659 100644
--- a/docker/kcover.Dockerfile
+++ b/docker/kcover.Dockerfile
@@ -19,7 +19,7 @@ ARG TARGETARCH
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=$TARGETARCH go build -ldflags "-s -w" -o kcover-controller ./cmd/kcover
 
 # runner
-FROM m.daocloud.io/docker.io/ubuntu:22.04
+FROM m.daocloud.io/docker.io/ubuntu:26.04
 
 WORKDIR /app
 
diff --git a/docker/mx-smi.Dockerfile b/docker/mx-smi.Dockerfile
index e4ad120..aacf06f 100644
--- a/docker/mx-smi.Dockerfile
+++ b/docker/mx-smi.Dockerfile
@@ -1,6 +1,6 @@
 FROM cr.metax-tech.com/public-library/maca-pytorch:3.3.0.4-torch2.6-py310-ubuntu24.04-amd64 AS metax-tools
 
-FROM m.daocloud.io/docker.io/ubuntu:24.04
+FROM m.daocloud.io/docker.io/ubuntu:26.04
 
 RUN apt-get update \
 	&& apt-get install -y --no-install-recommends \