diff --git a/src/dockerfiles/gap/ubuntu-2204-lts/Dockerfile b/src/dockerfiles/gap/ubuntu-2204-lts/Dockerfile
index ea649e8..ba5df0f 100644
--- a/src/dockerfiles/gap/ubuntu-2204-lts/Dockerfile
+++ b/src/dockerfiles/gap/ubuntu-2204-lts/Dockerfile
@@ -25,7 +25,7 @@ ARG PACKAGE_MANAGER_TARBALL_NAME="PackageManager-${PACKAGE_MANAGER_VERSION}.tar.
 ARG PACKAGE_MANAGER_DOWNLOAD_URL="https://github.com/gap-packages/PackageManager/releases/download/v${PACKAGE_MANAGER_VERSION}/${PACKAGE_MANAGER_TARBALL_NAME}"
 ## }}}
 
-FROM ubuntu:22.04 AS base
+FROM ubuntu:26.04 AS base
 ARG GAP_USER_GID
 ARG GAP_USER_GROUPNAME
 ARG GAP_USER_UID