diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index a559f6f..b2c08c5 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -21,6 +21,11 @@ jobs:
 
   build:
     runs-on: ubuntu-latest
+    env:
+      AWS_ACCESS_KEY_ID: jj
+      AWS_SECRET_ACCESS_KEY: jj
+      AWS_DEFAULT_REGION: 'site2-low'
+      AWS_ENDPOINT_URL: "http://127.0.0.1:4000"
 
 
 
@@ -36,10 +41,10 @@ jobs:
           JCLOUDS_REGIONS: site2-low
           S3PROXY_IDENTITY: jj
           S3PROXY_CREDENTIAL: jj
-          S3PROXY_AUTHORIZATION: none
-          
+
           LOG_LEVEL: info
           S3PROXY_ENDPOINT: http://0.0.0.0:80
+          S3PROXY_AUTHORIZATION: "aws-v2-or-v4"
           S3PROXY_VIRTUALHOST: ""
           S3PROXY_KEYSTORE_PATH: keystore.jks
           S3PROXY_KEYSTORE_PASSWORD: password
@@ -67,12 +72,8 @@ jobs:
 
     - name: Put test resources in S3Proxy Container
       run: |
-        aws --endpoint-url=http://127.0.0.1:4000 --region site2-low s3 mb s3://nfive
-        aws --endpoint-url=http://127.0.0.1:4000 --region site2-low s3 cp ${{ github.workspace }}/src/test/resources/nfive s3://nfive --recursive
-      env:
-        AWS_ACCESS_KEY_ID: jj
-        AWS_SECRET_ACCESS_KEY: jj
-        AWS_DEFAULT_REGION: 'site2-low'
+        aws s3 mb s3://nfive
+        aws s3 cp ${{ github.workspace }}/src/test/resources/nfive s3://nfive --recursive
 
     - name: Set up JDK 8
       uses: actions/setup-java@v3
diff --git a/src/test/java/org/vcell/vcellfiji/N5ImageHandlerTest.java b/src/test/java/org/vcell/vcellfiji/N5ImageHandlerTest.java
index e6448e6..be81c5f 100644
--- a/src/test/java/org/vcell/vcellfiji/N5ImageHandlerTest.java
+++ b/src/test/java/org/vcell/vcellfiji/N5ImageHandlerTest.java
@@ -26,15 +26,8 @@
 
 public class N5ImageHandlerTest {
 
-    private final String s3AccessKey = "access";
-    private final String s3SecretKey = "secret";
     private final String n5FileName = "nfive/test_image.n5";
 
-//    private final String s3CredsEndpoint = "http://127.0.0.1:9999";
-    private final String s3NoCredsEndpoint = "http://127.0.0.1:4000";
-
-    private final String testBucketName = "nfive";
-
     private File getTestResourceFiles(String filePath){
         try {
             URL url = ClassLoader.getSystemClassLoader().getResource(filePath);
@@ -64,36 +57,34 @@ public void testGettingImgPlus() throws IOException {
     @Test
     // Create client without creds, with cred no endpoint, endpoint no creds, endpoint and creds, then test whether they can handle images as expected
     public void testS3Client() throws IOException {
-//        HashMap<String, String> endpointCreds = new HashMap<>();
-        HashMap<String, String> endpointNoCreds = new HashMap<>();
+        HashMap<String, String> s3Endpoint = new HashMap<>();
         HashMap<String, String> credentials = new HashMap<>();
 
-//        endpointCreds.put("Endpoint", this.s3CredsEndpoint);
-//        endpointCreds.put("Region", Regions.US_EAST_1.getName());
+        s3Endpoint.put("Endpoint", "http://127.0.0.1:4000");
+        s3Endpoint.put("Region", Regions.US_EAST_1.getName());
 
-        endpointNoCreds.put("Endpoint", this.s3NoCredsEndpoint);
-        endpointNoCreds.put("Region", Regions.US_EAST_1.getName());
+        credentials.put("AccessKey", "jj");
+        credentials.put("SecretKey", "jj");
 
-        credentials.put("AccessKey", this.s3AccessKey);
-        credentials.put("SecretKey", this.s3SecretKey);
-
-        final String s3KeyPath = "s3://" + this.testBucketName + "/test_image.n5";
+        String testBucketName = "nfive";
+        final String s3KeyPath = "s3://" + testBucketName + "/test_image.n5";
         final String s3ProxyURL = "/" + this.n5FileName;
 
         N5ImageHandler n5ImageHandler = new N5ImageHandler();
 
+        // Environment variables are set in github actions VM
 
-//        n5ImageHandler.createS3Client(s3NoCredsEndpoint + s3ProxyURL, null, null);
-//        this.remoteN5ImgPlusTests(n5ImageHandler);
-//
-        n5ImageHandler.createS3Client(s3ProxyURL, null, endpointNoCreds);
+        n5ImageHandler.createS3Client(s3ProxyURL, null, null);
         this.remoteN5ImgPlusTests(n5ImageHandler);
 
-//        n5ImageHandler.createS3Client(this.s3CredsEndpoint + keyPath, credentials, null);
-//        this.remoteN5ImgPlusTests(n5ImageHandler);
+        n5ImageHandler.createS3Client(s3ProxyURL, null, s3Endpoint);
+        this.remoteN5ImgPlusTests(n5ImageHandler);
 
-//        n5ImageHandler.createS3Client(keyPath, credentials, endpointCreds);
-//        this.remoteN5ImgPlusTests(n5ImageHandler);
+        n5ImageHandler.createS3Client(s3ProxyURL, credentials, null);
+        this.remoteN5ImgPlusTests(n5ImageHandler);
+
+        n5ImageHandler.createS3Client(s3ProxyURL, credentials, s3Endpoint);
+        this.remoteN5ImgPlusTests(n5ImageHandler);
     }