diff --git a/deb/Makefile b/deb/Makefile
index 7a709756af..7a168a2bd0 100644
--- a/deb/Makefile
+++ b/deb/Makefile
@@ -53,9 +53,9 @@ RUN?=docker run --rm \
 	$(RUN_FLAGS) \
 	debbuild-$@/$(ARCH)
 
-DEBIAN_VERSIONS ?= debian-bullseye debian-bookworm debian-trixie
+DEBIAN_VERSIONS ?= debian-bookworm debian-trixie
 UBUNTU_VERSIONS ?= ubuntu-jammy ubuntu-noble ubuntu-resolute
-RASPBIAN_VERSIONS ?= raspbian-bullseye raspbian-bookworm
+RASPBIAN_VERSIONS ?= raspbian-bookworm
 DISTROS := $(DEBIAN_VERSIONS) $(UBUNTU_VERSIONS) $(RASPBIAN_VERSIONS)
 
 .PHONY: help
diff --git a/deb/build-deb b/deb/build-deb
index 7db2053aff..25d398ffc3 100755
--- a/deb/build-deb
+++ b/deb/build-deb
@@ -57,10 +57,10 @@ pkgRevision=1
 #   packaging-only changes (without a corresponding release of the software
 #   that's packaged).
 # - distro (e.g., "ubuntu")
-# - VERSION_ID (e.g. "22.04" or "11") this must be "sortable" to make sure that
+# - VERSION_ID (e.g. "22.04" or "12") this must be "sortable" to make sure that
 #   packages are upgraded when upgrading to a newer distro version ("codename"
 #   cannot be used for this, as they're not sorted)
-# - SUITE ("codename"), e.g. "jammy" or "bullseye". This is mostly for convenience,
+# - SUITE ("codename"), e.g. "jammy" or "bookworm". This is mostly for convenience,
 #   because some places refer to distro versions by codename, others by version.
 #   we prefix the codename with a tilde (~), which effectively excludes it from
 #   version comparison.
diff --git a/deb/debian-bullseye/Dockerfile b/deb/debian-bullseye/Dockerfile
deleted file mode 100644
index b3844b2d18..0000000000
--- a/deb/debian-bullseye/Dockerfile
+++ /dev/null
@@ -1,39 +0,0 @@
-# syntax=docker/dockerfile:1
-
-ARG GO_IMAGE=golang:latest
-ARG DISTRO=debian
-ARG SUITE=bullseye
-ARG VERSION_ID=11
-ARG BUILD_IMAGE=${DISTRO}:${SUITE}
-
-FROM ${GO_IMAGE} AS golang
-
-FROM ${BUILD_IMAGE}
-
-RUN apt-get update && apt-get install -y curl devscripts equivs git
-
-ENV GOPROXY=https://proxy.golang.org|direct
-ENV GO111MODULE=on
-ENV GOPATH=/go
-ENV GOTOOLCHAIN=local
-ENV PATH=$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"]
diff --git a/deb/raspbian-bullseye/Dockerfile b/deb/raspbian-bullseye/Dockerfile
deleted file mode 100644
index 80a8ea1f52..0000000000
--- a/deb/raspbian-bullseye/Dockerfile
+++ /dev/null
@@ -1,39 +0,0 @@
-# syntax=docker/dockerfile:1
-
-ARG GO_IMAGE=golang:latest
-ARG DISTRO=raspbian
-ARG SUITE=bullseye
-ARG VERSION_ID=11
-ARG BUILD_IMAGE=balenalib/rpi-raspbian:${SUITE}
-
-FROM ${GO_IMAGE} AS golang
-
-FROM ${BUILD_IMAGE}
-
-RUN apt-get update && apt-get install -y curl devscripts equivs git
-
-ENV GOPROXY=https://proxy.golang.org|direct
-ENV GO111MODULE=on
-ENV GOPATH=/go
-ENV GOTOOLCHAIN=local
-ENV PATH=$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"]
diff --git a/distros.json b/distros.json
index 06d424e494..61a58e5733 100644
--- a/distros.json
+++ b/distros.json
@@ -17,15 +17,6 @@
         "description": "CentOS Stream 10",
         "end_of_life": "2030"
     },
-    "debian-bullseye": {
-        "image": "debian:bullseye",
-        "arches": [
-            "amd64",
-            "aarch64",
-            "armhf"
-        ],
-        "description": "Debian 11 (oldstable)"
-    },
     "debian-bookworm": {
         "image": "debian:bookworm",
         "arches": [