diff --git a/.travis.yml b/.travis.yml
index ecff137..94c98ea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,13 +6,13 @@ services:
   - docker
 
 php:
-  - 7.1
   - 7.2
   - 7.3
 
 # Note: The ArangoDB version includes the colon (:), that way we can test pre-releases (i.e. '-preview:3.4.0-rc.4a').
 env:
   - ARANGODB_VERSION=":3.5.0"
+  - ARANGODB_VERSION=":latest"
 
 addons:
   hosts:
diff --git a/composer.json b/composer.json
index d9b8e4b..258b0d7 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
     "phpro/grumphp": "dev-master",
     "phpstan/phpstan": "^0.12.0@dev",
     "phpunit/phpunit": "8.*",
-    "sebastian/phpcpd": "^5.0@dev",
+    "sebastian/phpcpd": "^4.1",
     "triagens/arangodb": "3.5.*"
   },
   "autoload": {