diff --git a/testing/docker/docker-compose.test.yml b/testing/docker/docker-compose.test.yml
index d1955bd..ebd5dd3 100644
--- a/testing/docker/docker-compose.test.yml
+++ b/testing/docker/docker-compose.test.yml
@@ -124,7 +124,7 @@ services:
 
 # Test runner that runs all tests in parallel
   test-all:
-    image: ubuntu:24.04
+    image: ubuntu:26.04
     depends_on:
       - ubuntu-apt-test
       - rockylinux-yum-test
diff --git a/testing/docker/ubuntu.Dockerfile b/testing/docker/ubuntu.Dockerfile
index 6d56870..7bcffa0 100644
--- a/testing/docker/ubuntu.Dockerfile
+++ b/testing/docker/ubuntu.Dockerfile
@@ -1,5 +1,5 @@
 # Ubuntu test container for go-syspkg
-FROM ubuntu:24.04
+FROM ubuntu:26.04
 
 # Avoid interactive prompts
 ENV DEBIAN_FRONTEND=noninteractive