diff --git a/docs/setup-dev-environment.md b/docs/setup-dev-environment.md
index 35dd27dc..d64cb27d 100644
--- a/docs/setup-dev-environment.md
+++ b/docs/setup-dev-environment.md
@@ -1,7 +1,7 @@
 # Setting up a local development environment
 
 This document is intended to guide you through setting up a local development environment for
-Colouring London. This guide assumes you already have Ubuntu 18.04 server installed, typically
+Colouring London. This guide assumes you already have Ubuntu 20.04 server installed, typically
 installed in a virtual environment such a Virtual Box and are able to SSH into your Ubuntu
 installation for convenience.
 
@@ -24,7 +24,7 @@ Now install python and related tools.
 
 Next install postgres and postgis to enable support for geographical objects.
 
-`sudo apt-get install -y postgresql postgresql-contrib libpq-dev postgis postgresql-10-postgis-2.4`
+`sudo apt-get install -y postgresql postgresql-contrib libpq-dev postgis postgresql-12-postgis-3`
 
 and additional geo-spatial tools
 
diff --git a/docs/setup-production-environment.md b/docs/setup-production-environment.md
index d80be978..62c0cb03 100644
--- a/docs/setup-production-environment.md
+++ b/docs/setup-production-environment.md
@@ -3,7 +3,7 @@
 
 #### Preliminaries
 
-This guide assumes a virtual environment (VM) running Ubuntu 18_04.
+This guide assumes a virtual environment (VM) running Ubuntu 20_04.
 
 Install updates to packages:
 
@@ -28,7 +28,7 @@ Install some useful development tools
 
 Install Postgres and associated tools
 
-`sudo apt-get install -y postgresql postgresql-contrib libpq-dev postgis postgresql-10-postgis-2.4`
+`sudo apt-get install -y postgresql postgresql-contrib libpq-dev postgis postgresql-12-postgis-3`
 
 `sudo apt-get install -y gdal-bin libspatialindex-dev libgeos-dev libproj-dev`
 
diff --git a/provision/vm_provision.sh b/provision/vm_provision.sh
index 1d51cab6..88f08d70 100644
--- a/provision/vm_provision.sh
+++ b/provision/vm_provision.sh
@@ -26,12 +26,12 @@ apt-get update
 # Install:
 # - basics:  build-essential git vim-nox
 # - python with pip and venv:  python3 python3-pip python3-dev
-# - postgres and postgis: postgresql postgresql-contrib libpq-dev postgis postgresql-10-postgis-2.4
+# - postgres and postgis: postgresql postgresql-contrib libpq-dev postgis postgresql-12-postgis-3
 # - spatial shared libs:  gdal-bin libspatialindex-dev libgeos-dev libproj-dev
 apt-get install -y \
     build-essential git vim-nox wget curl \
     python3 python3-pip python3-dev python3-venv \
-    postgresql postgresql-contrib libpq-dev postgis postgresql-10-postgis-2.4 \
+    postgresql postgresql-contrib libpq-dev postgis postgresql-12-postgis-3 \
     gdal-bin libspatialindex-dev libgeos-dev libproj-dev