diff --git a/.travis.yml b/.travis.yml
index b946378f..9ac20ae7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,5 +10,8 @@ before_install:
 script:
   - docker run -v `pwd`:/srv cartoimages/windshaft-carto-testing
 
+after_success:
+  - export POSTGIS_VERSION=2.4
+
 language: generic
 
diff --git a/docker-test.sh b/docker-test.sh
index 6bf5360e..8cc8c093 100644
--- a/docker-test.sh
+++ b/docker-test.sh
@@ -8,4 +8,4 @@ yarn
 createdb template_postgis && createuser publicuser
 psql -c "CREATE EXTENSION postgis" template_postgis
 
-npm test
\ No newline at end of file
+POSTGIS_VERSION=2.4 npm test
\ No newline at end of file