diff --git a/.env.docker.sample b/.env.docker.sample
index 30ccbb4..7e892f0 100644
--- a/.env.docker.sample
+++ b/.env.docker.sample
@@ -2,5 +2,5 @@ SECRET_KEY=refero34o8rfhfjn983thf39fhc943rf923n3h
 POSTGRES_USER=icarus_op_test
 POSTGRES_PASSWORD=password
 POSTGRES_DB=icarus_auth_test_db
-POSTGRES_HOST=localhost
-DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:5432/${POSTGRES_DB}
\ No newline at end of file
+POSTGRES_HOST=auth_db
+DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:5432/${POSTGRES_DB}