diff --git a/debian/Dockerfile b/debian/Dockerfile
index a788927..8931713 100644
--- a/debian/Dockerfile
+++ b/debian/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:12-slim
+FROM docker.io/debian:trixie-20250929-slim
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
         ca-certificates \
@@ -8,9 +8,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
         jq \
         openssh-client \
     && rm -rf /var/lib/apt/lists/*
-RUN V="$(curl -sSL https://dl.k8s.io/release/stable.txt)" \
-    && curl -sSLo /usr/local/bin/kubectl \
-        "https://dl.k8s.io/release/$V/bin/linux/amd64/kubectl" \
+RUN curl -sLo /usr/local/bin/kubectl \
+        "https://dl.k8s.io/release/v1.34.1/bin/linux/amd64/kubectl" \
     && chmod 0755 /usr/local/bin/kubectl
 RUN useradd -m app
 USER app