diff --git a/controller/Dockerfile b/controller/Dockerfile
index 05ca872..0b26b5f 100644
--- a/controller/Dockerfile
+++ b/controller/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:26.04
 
 RUN apt-get update -y && apt-get install -y \
     apt-transport-https \