diff --git a/pom.xml b/pom.xml
index 545984a9..ea3f98f5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,11 +44,12 @@
     <properties>
         <maven.compiler.release>8</maven.compiler.release>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <jackson.version>2.14.2</jackson.version>
-        <aws.version>1.12.477</aws.version>
-        <netcdfJavaVersion>5.5.3</netcdfJavaVersion>
-        <zstdVersion>1.5.5-5</zstdVersion>
-        <junit-jupiter-version>5.10.2</junit-jupiter-version>
+        <jackson.version>2.20.0</jackson.version>
+        <aws.version>2.34.6</aws.version>
+        <netcdfJavaVersion>5.9.1</netcdfJavaVersion>
+        <zstdVersion>1.5.5-7</zstdVersion>
+        <junit-jupiter-version>5.14.0</junit-jupiter-version>
+        <findbugs.version>3.0.2</findbugs.version>
     </properties>
 
     <dependencies>
@@ -83,14 +84,19 @@
             <artifactId>jackson-datatype-jdk8</artifactId>
             <version>${jackson.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <version>${findbugs.version}</version>
+        </dependency>
         <dependency>
             <groupId>edu.ucar</groupId>
             <artifactId>cdm-core</artifactId>
             <version>${netcdfJavaVersion}</version>
         </dependency>
         <dependency>
-            <groupId>com.amazonaws</groupId>
-            <artifactId>aws-java-sdk-s3</artifactId>
+            <groupId>software.amazon.awssdk</groupId>
+            <artifactId>s3</artifactId>
             <version>${aws.version}</version>
         </dependency>
         <dependency>
diff --git a/src/main/java/dev/zarr/zarrjava/store/S3Store.java b/src/main/java/dev/zarr/zarrjava/store/S3Store.java
index 8afe254d..9368975f 100644
--- a/src/main/java/dev/zarr/zarrjava/store/S3Store.java
+++ b/src/main/java/dev/zarr/zarrjava/store/S3Store.java
@@ -1,10 +1,17 @@
 package dev.zarr.zarrjava.store;
 
-import com.amazonaws.services.s3.AmazonS3;
-import com.amazonaws.services.s3.model.GetObjectRequest;
-import com.amazonaws.services.s3.model.ObjectMetadata;
-import com.amazonaws.services.s3.model.S3ObjectInputStream;
 import dev.zarr.zarrjava.utils.Utils;
+import software.amazon.awssdk.core.ResponseInputStream;
+import software.amazon.awssdk.core.sync.RequestBody;
+import software.amazon.awssdk.services.s3.S3Client;
+import software.amazon.awssdk.services.s3.model.DeleteObjectRequest;
+import software.amazon.awssdk.services.s3.model.GetObjectRequest;
+import software.amazon.awssdk.services.s3.model.GetObjectResponse;
+import software.amazon.awssdk.services.s3.model.HeadObjectRequest;
+import software.amazon.awssdk.services.s3.model.ListObjectsRequest;
+import software.amazon.awssdk.services.s3.model.ListObjectsResponse;
+import software.amazon.awssdk.services.s3.model.PutObjectRequest;
+
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -16,13 +23,13 @@
 public class S3Store implements Store, Store.ListableStore {
 
   @Nonnull
-  private final AmazonS3 s3client;
+  private final S3Client s3client;
   @Nonnull
   private final String bucketName;
   @Nullable
   private final String prefix;
 
-  public S3Store(@Nonnull AmazonS3 s3client, @Nonnull String bucketName, @Nullable String prefix) {
+  public S3Store(@Nonnull S3Client s3client, @Nonnull String bucketName, @Nullable String prefix) {
     this.s3client = s3client;
     this.bucketName = bucketName;
     this.prefix = prefix;
@@ -40,8 +47,7 @@ String resolveKeys(String[] keys) {
 
   @Nullable
   ByteBuffer get(GetObjectRequest getObjectRequest) {
-    try (S3ObjectInputStream inputStream = s3client.getObject(getObjectRequest)
-        .getObjectContent()) {
+    try (ResponseInputStream<GetObjectResponse> inputStream = s3client.getObject(getObjectRequest)) {
       return Utils.asByteBuffer(inputStream);
     } catch (IOException e) {
       return null;
@@ -50,31 +56,44 @@ ByteBuffer get(GetObjectRequest getObjectRequest) {
 
   @Override
   public boolean exists(String[] keys) {
-    return s3client.doesObjectExist(bucketName, resolveKeys(keys));
+    HeadObjectRequest req = HeadObjectRequest.builder().bucket(bucketName).key(resolveKeys(keys)).build();
+    return s3client.headObject(req).sdkHttpResponse().statusCode() == 200;
   }
 
   @Nullable
   @Override
   public ByteBuffer get(String[] keys) {
-    return get(new GetObjectRequest(bucketName, resolveKeys(keys)));
+    return get(GetObjectRequest.builder().bucket(bucketName).key(resolveKeys(keys))
+        .build());
   }
 
   @Nullable
   @Override
   public ByteBuffer get(String[] keys, long start) {
-    return get(new GetObjectRequest(bucketName, resolveKeys(keys)).withRange(start));
+    GetObjectRequest req = GetObjectRequest.builder()
+    .bucket(bucketName)
+    .key(resolveKeys(keys))
+    .range(String.valueOf(start))
+    .build();
+    return get(req);
   }
 
   @Nullable
   @Override
   public ByteBuffer get(String[] keys, long start, long end) {
-    return get(new GetObjectRequest(bucketName, resolveKeys(keys)).withRange(start, end));
+    GetObjectRequest req = GetObjectRequest.builder()
+    .bucket(bucketName)
+    .key(resolveKeys(keys))
+    .range(String.valueOf(start)+"-"+String.valueOf(end))
+    .build();
+    return get(req);
   }
 
   @Override
   public void set(String[] keys, ByteBuffer bytes) {
     try (InputStream byteStream = new ByteArrayInputStream(Utils.toArray(bytes))) {
-      s3client.putObject(bucketName, resolveKeys(keys), byteStream, new ObjectMetadata());
+      /*AWS SDK for Java v2 migration: When using InputStream to upload with S3Client, Content-Length should be specified and used with RequestBody.fromInputStream(). Otherwise, the entire stream will be buffered in memory. If content length must be unknown, we recommend using the CRT-based S3 client - https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/crt-based-s3-client.html*/
+      s3client.putObject(PutObjectRequest.builder().bucket(bucketName).key(resolveKeys(keys)).build(), RequestBody.fromContentProvider(() -> byteStream, "application/octet-stream"));
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
@@ -82,16 +101,20 @@ public void set(String[] keys, ByteBuffer bytes) {
 
   @Override
   public void delete(String[] keys) {
-    s3client.deleteObject(bucketName, resolveKeys(keys));
+    s3client.deleteObject(DeleteObjectRequest.builder().bucket(bucketName).key(resolveKeys(keys))
+        .build());
   }
 
   @Override
   public Stream<String> list(String[] keys) {
     final String fullKey = resolveKeys(keys);
-    return s3client.listObjects(bucketName, fullKey)
-        .getObjectSummaries()
+    ListObjectsRequest req = ListObjectsRequest.builder()
+    .bucket(bucketName).prefix(fullKey)
+    .build();
+    ListObjectsResponse res = s3client.listObjects(req);
+    return res.contents()
         .stream()
-        .map(p -> p.getKey().substring(fullKey.length() + 1));
+        .map(p -> p.key().substring(fullKey.length() + 1));
   }
 
   @Nonnull
diff --git a/src/test/java/dev/zarr/zarrjava/ZarrTest.java b/src/test/java/dev/zarr/zarrjava/ZarrTest.java
index 647a3b3e..36274801 100644
--- a/src/test/java/dev/zarr/zarrjava/ZarrTest.java
+++ b/src/test/java/dev/zarr/zarrjava/ZarrTest.java
@@ -1,8 +1,5 @@
 package dev.zarr.zarrjava;
 
-import com.amazonaws.auth.AWSStaticCredentialsProvider;
-import com.amazonaws.auth.AnonymousAWSCredentials;
-import com.amazonaws.services.s3.AmazonS3ClientBuilder;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.github.luben.zstd.Zstd;
@@ -20,6 +17,10 @@
 import org.junit.jupiter.params.provider.CsvSource;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.junit.jupiter.params.provider.ValueSource;
+
+import software.amazon.awssdk.auth.credentials.AnonymousCredentialsProvider;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.services.s3.S3Client;
 import ucar.ma2.MAMath;
 
 import java.io.*;
@@ -280,9 +281,9 @@ public void testFileSystemStores() throws IOException, ZarrException {
 
     @Test
     public void testS3Store() throws IOException, ZarrException {
-        S3Store s3Store = new S3Store(AmazonS3ClientBuilder.standard()
-            .withRegion("eu-west-1")
-            .withCredentials(new AWSStaticCredentialsProvider(new AnonymousAWSCredentials()))
+        S3Store s3Store = new S3Store(S3Client.builder()
+            .region(Region.of("eu-west-1"))
+            .credentialsProvider(AnonymousCredentialsProvider.create())
             .build(), "static.webknossos.org", "data");
         System.out.println(Array.open(s3Store.resolve("zarr_v3", "l4_sample", "color", "1")));
     }