diff --git a/CHANGELOG.md b/CHANGELOG.md
index defeb1ea..ae237dc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # browser-switch-android Release Notes
 
+## unreleased
+  * Add a UUID to `BrowserSwitchActivityRegistryKey` used to start AuthTab flows to allow for multiple instances of 
+    BrowserSwitchClient to have separate keys to deliver results to. Fixes an issue where multiple 
+    BrowserSwitchClient instances are not supported.
+
 ## 3.5.0
   * Add parameterized constructor `BrowserSwitchClient(ActivityResultRegistry)` for AuthTab support on Jetpack Compose
   * Bump `androidx.browser` to `1.10.0-alpha02`
diff --git a/browser-switch/src/main/java/com/braintreepayments/api/BrowserSwitchClient.java b/browser-switch/src/main/java/com/braintreepayments/api/BrowserSwitchClient.java
index e11db2c4..edf3926e 100644
--- a/browser-switch/src/main/java/com/braintreepayments/api/BrowserSwitchClient.java
+++ b/browser-switch/src/main/java/com/braintreepayments/api/BrowserSwitchClient.java
@@ -19,6 +19,8 @@
 
 import org.json.JSONObject;
 
+import java.util.UUID;
+
 /**
  * Client that manages the logic for browser switching.
  */
@@ -29,7 +31,7 @@ public class BrowserSwitchClient {
     private ActivityResultLauncher<Intent> authTabLauncher;
     private BrowserSwitchRequest pendingAuthTabRequest;
 
-    final String registryKey = "BrowserSwitchActivityRegistryKey";
+    final String registryKey = "BrowserSwitchActivityRegistryKey"+ UUID.randomUUID();
 
     @Nullable
     private BrowserSwitchFinalResult authTabCallbackResult;