diff --git a/contrib/ci/Dockerfile-centos.in b/contrib/ci/Dockerfile-centos.in
deleted file mode 100644
index 888d605b4..000000000
--- a/contrib/ci/Dockerfile-centos.in
+++ /dev/null
@@ -1,14 +0,0 @@
-FROM centos:7
-%%%OS%%%
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
-RUN echo fubar > /etc/machine-id
-RUN yum install epel-release -y
-RUN echo fubar > /etc/machine-id
-%%%INSTALL_DEPENDENCIES_COMMAND%%%
-RUN pip3 install pillow pygobject
-RUN wget https://copr.fedorainfracloud.org/coprs/jsynacek/systemd-backports-for-centos-7/repo/epel-7/jsynacek-systemd-backports-for-centos-7-epel-7.repo -O /etc/yum.repos.d/jsynacek-systemd-centos-7.repo
-RUN yum --enablerepo=epel-testing -y update
-WORKDIR /github/workspace
-CMD ["./contrib/ci/centos.sh"]
diff --git a/contrib/ci/Dockerfile-flatpak.in b/contrib/ci/Dockerfile-flatpak.in
deleted file mode 100644
index 451d5423f..000000000
--- a/contrib/ci/Dockerfile-flatpak.in
+++ /dev/null
@@ -1,10 +0,0 @@
-FROM fedora:29
-%%%OS%%%
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
-RUN echo fubar > /etc/machine-id
-%%%INSTALL_DEPENDENCIES_COMMAND%%%
-RUN dnf --enablerepo=updates-testing -y update
-WORKDIR /github/workspace
-CMD ["./contrib/ci/flatpak.py"]