diff --git a/Dockerfile b/Dockerfile
index 876b3e96..48ef6971 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,15 +25,15 @@ ENV GITLAB_INSTALL_DIR="${GITLAB_HOME}/gitlab" \
     GITLAB_RUNTIME_DIR="${GITLAB_CACHE_DIR}/runtime"
 
 RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv E1DD270288B4E6030699E45FA1715D88E1DF1F24 \
- && echo "deb http://ppa.launchpad.net/git-core/ppa/ubuntu trusty main" >> /etc/apt/sources.list \
+ && echo "deb http://ppa.launchpad.net/git-core/ppa/ubuntu xenial main" >> /etc/apt/sources.list \
  && apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 80F70E11F0F0D5F10CB20E62F5DA5F09C3173AA6 \
- && echo "deb http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu trusty main" >> /etc/apt/sources.list \
+ && echo "deb http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu xenial main" >> /etc/apt/sources.list \
  && apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 8B3981E7A6852F782CC4951600A6F0A3C300EE8C \
- && echo "deb http://ppa.launchpad.net/nginx/stable/ubuntu trusty main" >> /etc/apt/sources.list \
+ && echo "deb http://ppa.launchpad.net/nginx/stable/ubuntu xenial main" >> /etc/apt/sources.list \
  && wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
- && echo 'deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main' > /etc/apt/sources.list.d/pgdg.list \
+ && echo 'deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main' > /etc/apt/sources.list.d/pgdg.list \
  && wget --quiet -O - https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - \
- && echo 'deb https://deb.nodesource.com/node_8.x trusty main' > /etc/apt/sources.list.d/nodesource.list \
+ && echo 'deb https://deb.nodesource.com/node_8.x xenial main' > /etc/apt/sources.list.d/nodesource.list \
  && wget --quiet -O - https://dl.yarnpkg.com/debian/pubkey.gpg  | apt-key add - \
  && echo 'deb https://dl.yarnpkg.com/debian/ stable main' > /etc/apt/sources.list.d/yarn.list \
  && apt-get update \