diff --git a/lib/java-server-sdk-redis-store/README.md b/lib/java-server-sdk-redis-store/README.md
index d2d2820..26204f3 100644
--- a/lib/java-server-sdk-redis-store/README.md
+++ b/lib/java-server-sdk-redis-store/README.md
@@ -23,10 +23,10 @@ This assumes that you have already installed the LaunchDarkly Java SDK.
         <dependency>
           <groupId>redis.clients</groupId>
           <artifactId>jedis</artifactId>
-          <version>2.9.0</version>
+          <version>7.1.0</version>
         </dependency>
 
-    This library is compatible with Jedis 2.x versions greater than or equal to 2.9.0, and also with Jedis 3.x.
+    This library uses Jedis 7.1.0 by default and requires Jedis 3.6.0 or later for username/password (ACL) authentication support.
 
 3. Import the LaunchDarkly package and the package for this library:
 
@@ -45,6 +45,44 @@ This assumes that you have already installed the LaunchDarkly Java SDK.
 
 By default, the store will try to connect to a local Redis instance on port 6379.
 
+## Authentication
+
+### Password-only authentication (legacy)
+
+For Redis servers using simple password authentication:
+
+        LDConfig config = new LDConfig.Builder()
+            .dataStore(
+                Components.persistentDataStore(
+                    Redis.dataStore().password("my-redis-password")
+                )
+            )
+            .build();
+
+Or include it in the URI:
+
+        Redis.dataStore().url("redis://:my-redis-password@my-redis-host:6379")
+
+### Username/password authentication (Redis 6.0+ ACL)
+
+For Redis 6.0+ servers using ACL with username and password:
+
+        LDConfig config = new LDConfig.Builder()
+            .dataStore(
+                Components.persistentDataStore(
+                    Redis.dataStore()
+                        .username("my-username")
+                        .password("my-password")
+                )
+            )
+            .build();
+
+Or include both in the URI:
+
+        Redis.dataStore().url("redis://my-username:my-password@my-redis-host:6379")
+
+**Note:** Username/password authentication requires Jedis 3.6.0 or later.
+
 ## Caching behavior
 
 The LaunchDarkly SDK has a standard caching mechanism for any persistent data store, to reduce database traffic. This is configured through the SDK's `PersistentDataStoreBuilder` class as described the SDK documentation. For instance, to specify a cache TTL of 5 minutes:
diff --git a/lib/java-server-sdk-redis-store/build.gradle b/lib/java-server-sdk-redis-store/build.gradle
index 1d8e62c..5d1eaa2 100644
--- a/lib/java-server-sdk-redis-store/build.gradle
+++ b/lib/java-server-sdk-redis-store/build.gradle
@@ -42,7 +42,7 @@ ext {
 
 ext.versions = [
     "sdk": "6.3.0", // the *lowest* version we're compatible with
-    "jedis": "2.9.0"
+    "jedis": "7.1.0" // 3.6.0+ required for username/password (ACL) authentication
 ]
 
 ext.libraries = [:]
diff --git a/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreBuilder.java b/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreBuilder.java
index d8df2ec..1a7dbff 100644
--- a/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreBuilder.java
+++ b/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreBuilder.java
@@ -76,6 +76,7 @@ public abstract class RedisStoreBuilder<T> implements ComponentConfigurer<T>, Di
   Duration connectTimeout = Duration.ofMillis(Protocol.DEFAULT_TIMEOUT);
   Duration socketTimeout = Duration.ofMillis(Protocol.DEFAULT_TIMEOUT);
   Integer database = null;
+  String username = null;
   String password = null;
   boolean tls = false;
   JedisPoolConfig poolConfig = null;
@@ -98,11 +99,30 @@ public RedisStoreBuilder<T> database(Integer database) {
     return this;
   }
   
+  /**
+   * Specifies a username for Redis ACL authentication.
+   * <p>
+   * Redis 6.0+ supports Access Control Lists (ACL) with username/password authentication.
+   * It is also possible to include a username in the Redis URI, in the form {@code redis://USERNAME:PASSWORD@host:port}.
+   * Any username that you set with {@link #username(String)} will override the URI.
+   * <p>
+   * Note: Using this feature requires Jedis 3.6.0 or later.
+   * 
+   * @param username the username for ACL authentication
+   * @return the builder
+   * @since 2.2.0
+   */
+  public RedisStoreBuilder<T> username(String username) {
+    this.username = username;
+    return this;
+  }
+  
   /**
    * Specifies a password that will be sent to Redis in an AUTH command.
    * <p>
-   * It is also possible to include a password in the Redis URI, in the form {@code redis://:PASSWORD@host:port}. Any
-   * password that you set with {@link #password(String)} will override the URI.
+   * It is also possible to include a password in the Redis URI, in the form {@code redis://:PASSWORD@host:port}
+   * or {@code redis://USERNAME:PASSWORD@host:port} for ACL authentication. Any password that you set with
+   * {@link #password(String)} will override the URI.
    * 
    * @param password the password
    * @return the builder
diff --git a/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreImplBase.java b/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreImplBase.java
index fa1ff5c..2241675 100644
--- a/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreImplBase.java
+++ b/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisStoreImplBase.java
@@ -21,11 +21,15 @@ protected RedisStoreImplBase(RedisStoreBuilder<?> builder, LDLogger logger) {
     // to decompose the URI.
     String host = builder.uri.getHost();
     int port = builder.uri.getPort();
+    String username = builder.username == null ? RedisURIComponents.getUsername(builder.uri) : builder.username;
     String password = builder.password == null ? RedisURIComponents.getPassword(builder.uri) : builder.password;
     int database = builder.database == null ? RedisURIComponents.getDBIndex(builder.uri) : builder.database;
     boolean tls = builder.tls || builder.uri.getScheme().equals("rediss");
 
     String extra = tls ? " with TLS" : "";
+    if (username != null) {
+      extra = extra + (extra.isEmpty() ? " with" : " and") + " username";
+    }
     if (password != null) {
       extra = extra + (extra.isEmpty() ? " with" : " and") + " password";
     }
@@ -41,6 +45,7 @@ protected RedisStoreImplBase(RedisStoreBuilder<?> builder, LDLogger logger) {
         port,
         (int) builder.connectTimeout.toMillis(),
         (int) builder.socketTimeout.toMillis(),
+        username,
         password,
         database,
         null, // clientName
diff --git a/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisURIComponents.java b/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisURIComponents.java
index 3c39ccc..3c44a74 100644
--- a/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisURIComponents.java
+++ b/lib/java-server-sdk-redis-store/src/main/java/com/launchdarkly/sdk/server/integrations/RedisURIComponents.java
@@ -8,6 +8,39 @@
  * that class doesn't exist in the same location in both versions.
  */
 abstract class RedisURIComponents {
+  /**
+   * Extracts the username from a Redis URI.
+   * <p>
+   * Supports both formats:
+   * <ul>
+   *   <li>{@code redis://USERNAME:PASSWORD@host:port} - returns USERNAME</li>
+   *   <li>{@code redis://:PASSWORD@host:port} - returns null (password-only, legacy format)</li>
+   * </ul>
+   * 
+   * @param uri the Redis URI
+   * @return the username, or null if not specified or empty
+   */
+  static String getUsername(URI uri) {
+    if (uri.getUserInfo() == null) {
+      return null;
+    }
+    String[] parts = uri.getUserInfo().split(":", 2);
+    // If the username part is empty (e.g., ":password"), return null
+    return (parts.length > 0 && !parts[0].isEmpty()) ? parts[0] : null;
+  }
+  
+  /**
+   * Extracts the password from a Redis URI.
+   * <p>
+   * Supports both formats:
+   * <ul>
+   *   <li>{@code redis://USERNAME:PASSWORD@host:port} - returns PASSWORD</li>
+   *   <li>{@code redis://:PASSWORD@host:port} - returns PASSWORD (legacy format)</li>
+   * </ul>
+   * 
+   * @param uri the Redis URI
+   * @return the password, or null if not specified
+   */
   static String getPassword(URI uri) {
     if (uri.getUserInfo() == null) {
       return null;
@@ -16,6 +49,12 @@ static String getPassword(URI uri) {
     return parts.length < 2 ? null : parts[1];
   }
   
+  /**
+   * Extracts the database index from a Redis URI.
+   * 
+   * @param uri the Redis URI (e.g., {@code redis://host:port/2})
+   * @return the database index, or 0 if not specified
+   */
   static int getDBIndex(URI uri) {
     String[] parts = uri.getPath().split("/", 2);
     if (parts.length < 2 || parts[1].isEmpty()) {