diff --git a/.travis.yml b/.travis.yml
index 63036a2..80d897f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+dist: trusty
 language: php
 matrix:
     include:
diff --git a/phpstan-sources.neon b/phpstan-sources.neon
index ed94525..096cae4 100644
--- a/phpstan-sources.neon
+++ b/phpstan-sources.neon
@@ -1,3 +1,2 @@
 parameters:
     ignoreErrors:
-        - '/Call to an undefined method GuzzleHttp\\Client::post\(\)/'