diff --git a/deployment/setup_20.04.sh b/deployment/setup_20.04.sh
index c7cfe84d5..3802f9f95 100644
--- a/deployment/setup_20.04.sh
+++ b/deployment/setup_20.04.sh
@@ -179,7 +179,7 @@ function install_dependencies() {
   curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
   NODE_MAJOR=20
   echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list
-  echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list
+  echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg 16" > /etc/apt/sources.list.d/pgdg.list
   wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
 
 
@@ -189,7 +189,7 @@ function install_dependencies() {
       git software-properties-common ca-certificates imagemagick libpq-dev \
       libxml2-dev libxslt1-dev file g++ gcc autoconf build-essential \
       libssl-dev libyaml-dev libreadline-dev gnupg2 \
-      postgresql-client redis-tools \
+      postgresql-client-16 redis-tools \
       nodejs patch ruby-dev zlib1g-dev liblzma-dev \
       libgmp-dev libncurses5-dev libffi-dev libgdbm6 libgdbm-dev sudo \
       libvips python3-pip