diff --git a/Dockerfile b/Dockerfile
index 649c4eb..1f975ea 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 #FROM ubuntu:16.04
-FROM ubuntu:18.04@sha256:152dc042452c496007f07ca9127571cb9c29697f42acbfad72324b2bb2e43c98
+FROM ubuntu:26.04@sha256:3131b4cc82a783df6c9df078f86e01819a13594b865c2cad47bd1bca2b7063bb
 
 RUN \
   apt-get update && \
diff --git a/Dockerfile.jammy3005 b/Dockerfile.jammy3005
index 3c24683..91c39ab 100644
--- a/Dockerfile.jammy3005
+++ b/Dockerfile.jammy3005
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04@sha256:c7eb020043d8fc2ae0793fb35a37bff1cf33f156d4d4b12ccc7f3ef8706c38b1
+FROM ubuntu:26.04@sha256:3131b4cc82a783df6c9df078f86e01819a13594b865c2cad47bd1bca2b7063bb
 
 RUN \
   export DEBIAN_FRONTEND=noninteractive && \