diff --git a/src/main/java/software/amazon/msk/auth/iam/internals/AuthenticationRequestParams.java b/src/main/java/software/amazon/msk/auth/iam/internals/AuthenticationRequestParams.java
index c8b14f2..b7ebe6e 100644
--- a/src/main/java/software/amazon/msk/auth/iam/internals/AuthenticationRequestParams.java
+++ b/src/main/java/software/amazon/msk/auth/iam/internals/AuthenticationRequestParams.java
@@ -18,7 +18,7 @@
 import com.amazonaws.auth.AWSCredentials;
 import com.amazonaws.regions.Region;
 import com.amazonaws.regions.RegionMetadata;
-import com.amazonaws.regions.RegionMetadataFactory;
+import com.amazonaws.partitions.PartitionsLoader;
 import com.amazonaws.regions.Regions;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
@@ -38,7 +38,7 @@
 class AuthenticationRequestParams {
     private static final String VERSION_1 = "2020_10_22";
     private static final String SERVICE_SCOPE = "kafka-cluster";
-    private static RegionMetadata regionMetadata = RegionMetadataFactory.create();
+    private static RegionMetadata regionMetadata = new RegionMetadata(new PartitionsLoader().build());
 
     @NonNull
     private final String version;