diff --git a/.travis.yml b/.travis.yml
index eceaaab..82b1af4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,29 +1,52 @@
-# R for travis: see documentation at https://docs.travis-ci.com/user/languages/r
+language: r
 
-language: R
 sudo: required
+
 cache: packages
 
-apt_packages:
-  - libv8-dev
+dist: trusty
+
+before_install:
+  - sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable --yes
+  - sudo apt-get --yes --force-yes update -qq
+  # install tmap dependencies
+  - sudo apt-get install --yes libprotobuf-dev protobuf-compiler libv8-3.14-dev
+  # install tmap dependencies; for 16.04 libjq-dev this ppa is needed:
+  - sudo add-apt-repository -y ppa:opencpu/jq
+  - sudo apt-get --yes --force-yes update -qq
+  - sudo apt-get install libjq-dev
+  # units/udunits2 dependency:
+  - sudo apt-get install --yes libudunits2-dev
+  # sf dependencies:
+  - sudo apt-get install --yes libproj-dev libgeos-dev libgdal-dev
+  # postgis source compile dependencies:
+  - sudo apt-get --yes install libjson-c-dev postgresql-server-dev-9.6
+  # install postgis from source:
+  - wget http://download.osgeo.org/postgis/source/postgis-2.3.2.tar.gz
+  - (mv postgis* /tmp; cd /tmp; tar xzf postgis-2.3.2.tar.gz)
+  - (cd /tmp/postgis-2.3.2 ; ./configure; make; sudo make install)
+  # activate liblwgeom by:
+  - sudo ldconfig
+  # create postgis databases:
+  - sudo service postgresql restart
+  - createdb postgis
+  - psql -d postgis -c "CREATE EXTENSION postgis;"
+  - psql -d postgis -c "GRANT CREATE ON DATABASE postgis TO travis"
+  - createdb empty
+  - psql -d empty -c "CREATE EXTENSION postgis;"
+
+
+addons:
+  postgresql: "9.6"
 
 r:
  - oldrel
  - release
  - devel
 
-<<<<<<< HEAD
-notifications:
-  email:
-    - bob@rud.is
-  irc:
-    channels:
-      - "irc.rud.is#builds"
-    nick: travisci
-
-after_success:
-  - Rscript -e 'covr::codecov()'
-=======
 after_success:
+  - dropdb postgis
+  - createdb postgis
+  - psql -d postgis -c "CREATE EXTENSION postgis;"
+  - psql -d postgis -c "GRANT CREATE ON DATABASE postgis TO travis"
   - Rscript -e 'covr::codecov()'
->>>>>>> c0ce51942c79090d1a9ae3fb95f7e2b292d9302e
diff --git a/DESCRIPTION b/DESCRIPTION
index 4b79383..2b85040 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -33,5 +33,6 @@ Imports:
     jsonlite,
     stats,
     utils,
-    sf
+    sf,
+    units (>= 0.4-6)
 RoxygenNote: 6.0.1