diff --git a/api.planx.uk/.env.test.example b/api.planx.uk/.env.test.example
index 81f94c08c1..ba874716ac 100644
--- a/api.planx.uk/.env.test.example
+++ b/api.planx.uk/.env.test.example
@@ -25,6 +25,9 @@ EDITOR_URL_EXT=example.com
 HASURA_GRAPHQL_URL=http://hasura:8080/v1/graphql
 HASURA_PLANX_API_KEY=👻
 
+# Minio object storage server port
+MINIO_PORT=1234
+
 # Integrations
 BOPS_API_TOKEN=👻
 BOPS_API_TOKEN=👻
diff --git a/api.planx.uk/jest.setup.js b/api.planx.uk/jest.setup.js
index 5941f21f04..f196628439 100644
--- a/api.planx.uk/jest.setup.js
+++ b/api.planx.uk/jest.setup.js
@@ -1,7 +1,10 @@
 import dotenv from "dotenv";
 import { queryMock } from "./tests/graphqlQueryMock";
 
-dotenv.config({ path: "./.env.test" });
+dotenv.config({
+  path: "./.env.test",
+  override: true,
+});
 
 beforeEach(() => {
   queryMock.setup(process.env.HASURA_GRAPHQL_URL);
diff --git a/api.planx.uk/modules/file/service/utils.test.ts b/api.planx.uk/modules/file/service/utils.test.ts
index 0fbecabc47..6ed470b57f 100644
--- a/api.planx.uk/modules/file/service/utils.test.ts
+++ b/api.planx.uk/modules/file/service/utils.test.ts
@@ -12,7 +12,7 @@ describe("s3 Factory", () => {
   });
 
   it("returns Minio config for local development", () => {
-    expect(s3Factory()).toHaveProperty("endpoint.host", "minio");
+    expect(s3Factory()).toHaveProperty("endpoint.host", "minio:1234");
   });
 
   ["pizza", "staging", "production"].forEach((env) => {