diff --git a/travis/phpunit-mysql-travis.xml b/travis/phpunit-mysql-travis.xml
index cc033ff959..f5f1aa2417 100644
--- a/travis/phpunit-mysql-travis.xml
+++ b/travis/phpunit-mysql-travis.xml
@@ -34,6 +34,7 @@
 		<server name="PHPBB_TEST_DBNAME" value="phpbb_tests" />
 		<server name="PHPBB_TEST_DBUSER" value="root" />
 		<server name="PHPBB_TEST_DBPASSWD" value="" />
+		<server name="PHPBB_TEST_REDIS_HOST" value="localhost" />
 		<server name="PHPBB_TEST_TABLE_PREFIX" value="phpbb_"/>
 	</php>
 </phpunit>
diff --git a/travis/phpunit-postgres-travis.xml b/travis/phpunit-postgres-travis.xml
index 5019c225b4..a202ec4a36 100644
--- a/travis/phpunit-postgres-travis.xml
+++ b/travis/phpunit-postgres-travis.xml
@@ -36,6 +36,7 @@
 		<server name="PHPBB_TEST_DBNAME" value="phpbb_tests" />
 		<server name="PHPBB_TEST_DBUSER" value="postgres" />
 		<server name="PHPBB_TEST_DBPASSWD" value="" />
+		<server name="PHPBB_TEST_REDIS_HOST" value="localhost" />
 		<server name="PHPBB_TEST_TABLE_PREFIX" value="phpbb_"/>
 	</php>
 </phpunit>