diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a1a0d9f51a..73c55bf338 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,6 @@ jobs:
           - debian-bullseye
           - debian-bookworm
           - debian-trixie
-          - ubuntu-focal
           - ubuntu-jammy
           - ubuntu-noble
           - ubuntu-oracular
diff --git a/Jenkinsfile b/Jenkinsfile
index 42ea7277d7..d0f59d41fa 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -12,7 +12,6 @@ def pkgs = [
     [target: "fedora-42",                image: "fedora:42",                              arches: ["amd64", "aarch64"]],          // EOL: May 13, 2026
     [target: "raspbian-bullseye",        image: "balenalib/rpi-raspbian:bullseye",        arches: ["armhf"]],                     // Debian/Raspbian 11 (stable)
     [target: "raspbian-bookworm",        image: "balenalib/rpi-raspbian:bookworm",        arches: ["armhf"]],                     // Debian/Raspbian 12 (next stable)
-    [target: "ubuntu-focal",             image: "ubuntu:focal",                           arches: ["amd64", "aarch64", "armhf"]], // Ubuntu 20.04 LTS (End of support: April, 2025. EOL: April, 2030)
     [target: "ubuntu-jammy",             image: "ubuntu:jammy",                           arches: ["amd64", "aarch64", "armhf"]], // Ubuntu 22.04 LTS (End of support: June,  2027. EOL: April, 2032)
     [target: "ubuntu-noble",             image: "ubuntu:noble",                           arches: ["amd64", "aarch64", "armhf"]], // Ubuntu 24.04 LTS (End of support: June,  2029. EOL: April, 2034)
     [target: "ubuntu-oracular",          image: "ubuntu:oracular",                        arches: ["amd64", "aarch64", "armhf"]], // Ubuntu 24.10 (EOL: July, 2025)
diff --git a/Makefile b/Makefile
index 1b867b28c8..8beb5b2f7c 100644
--- a/Makefile
+++ b/Makefile
@@ -99,7 +99,7 @@ static: checkout ## build static-compiled packages
 
 .PHONY: verify
 verify: ## verify installation of packages
-# to verify using packages from staging, use: make VERIFY_PACKAGE_REPO=stage IMAGE=ubuntu:focal verify
+# to verify using packages from staging, use: make VERIFY_PACKAGE_REPO=stage IMAGE=ubuntu:noble verify
 	docker run $(VERIFY_PLATFORM) --rm -i \
 		-v "$$(pwd):/v" \
 		-e DEBIAN_FRONTEND=noninteractive \
diff --git a/deb/Makefile b/deb/Makefile
index af3c1e3d84..f1424067ef 100644
--- a/deb/Makefile
+++ b/deb/Makefile
@@ -54,7 +54,7 @@ RUN?=docker run --rm \
 	debbuild-$@/$(ARCH)
 
 DEBIAN_VERSIONS ?= debian-bullseye debian-bookworm debian-trixie
-UBUNTU_VERSIONS ?= ubuntu-focal ubuntu-jammy ubuntu-noble ubuntu-oracular ubuntu-plucky
+UBUNTU_VERSIONS ?= ubuntu-jammy ubuntu-noble ubuntu-oracular ubuntu-plucky
 RASPBIAN_VERSIONS ?= raspbian-bullseye raspbian-bookworm
 DISTROS := $(DEBIAN_VERSIONS) $(UBUNTU_VERSIONS) $(RASPBIAN_VERSIONS)
 
diff --git a/deb/README.md b/deb/README.md
index e63acdc337..229fb70bdb 100644
--- a/deb/README.md
+++ b/deb/README.md
@@ -29,7 +29,7 @@ make ubuntu
 
 ## Specifying a specific distro version
 ```shell
-make ubuntu-focal
+make ubuntu-noble
 ```
 
 ## Building the for all distros
diff --git a/deb/ubuntu-focal/Dockerfile b/deb/ubuntu-focal/Dockerfile
deleted file mode 100644
index dbca943097..0000000000
--- a/deb/ubuntu-focal/Dockerfile
+++ /dev/null
@@ -1,46 +0,0 @@
-# syntax=docker/dockerfile:1
-
-ARG GO_IMAGE=golang:latest
-ARG DISTRO=ubuntu
-ARG SUITE=focal
-ARG VERSION_ID=20.04
-ARG BUILD_IMAGE=${DISTRO}:${SUITE}
-
-FROM ${GO_IMAGE} AS golang
-
-FROM ${BUILD_IMAGE}
-
-# Remove diverted man binary to prevent man-pages being replaced with "minimized" message. See docker/for-linux#639
-RUN if  [ "$(dpkg-divert --truename /usr/bin/man)" = "/usr/bin/man.REAL" ]; then \
-        rm -f /usr/bin/man; \
-        dpkg-divert --quiet --remove --rename /usr/bin/man; \
-    fi
-
-ARG DEBIAN_FRONTEND=noninteractive
-RUN apt-get update && apt-get install -y curl devscripts equivs git
-
-ENV GOPROXY=https://proxy.golang.org|direct
-ENV GO111MODULE=off
-ENV GOPATH=/go
-ENV GOTOOLCHAIN=local
-ENV PATH=$PATH:/usr/local/go/bin:$GOPATH/bin
-
-ARG COMMON_FILES
-COPY --link ${COMMON_FILES} /root/build-deb/debian
-RUN apt-get update \
- && mk-build-deps -t "apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends -y" -i /root/build-deb/debian/control
-
-COPY --link sources/ /sources
-ARG DISTRO
-ARG SUITE
-ARG VERSION_ID
-ENV DISTRO=${DISTRO}
-ENV SUITE=${SUITE}
-ENV VERSION_ID=${VERSION_ID}
-
-COPY --link --from=golang /usr/local/go /usr/local/go
-
-WORKDIR /root/build-deb
-COPY build-deb /root/build-deb/build-deb
-
-ENTRYPOINT ["/root/build-deb/build-deb"]