diff --git a/bitbucket-pipelines.yml b/bitbucket-pipelines.yml
index 6ea5f116..f79eaf72 100644
--- a/bitbucket-pipelines.yml
+++ b/bitbucket-pipelines.yml
@@ -14,6 +14,8 @@ definitions:
   services:
     postgres:
       image: postgres
+      variables:
+        POSTGRES_HOST_AUTH_METHOD: trust
 
 aliases:
 - &unittest-python