diff --git a/Example/DynamicLinks/Tests/FIRDLScionLoggingTest.m b/Example/DynamicLinks/Tests/FIRDLScionLoggingTest.m
index e7cb81847c..8b509d02a1 100644
--- a/Example/DynamicLinks/Tests/FIRDLScionLoggingTest.m
+++ b/Example/DynamicLinks/Tests/FIRDLScionLoggingTest.m
@@ -95,6 +95,8 @@ static FakeAnalyticsLogEventWithOriginNameParametersHandler _handler;
 - (void)setConditionalUserProperty:(nonnull NSDictionary<NSString *, id> *)conditionalUserProperty {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
 
 @interface FIRDLScionLoggingTest : XCTestCase
diff --git a/Example/Messaging/Tests/FIRMessagingAnalyticsTest.m b/Example/Messaging/Tests/FIRMessagingAnalyticsTest.m
index 19b335bef0..adaa4ddfdb 100644
--- a/Example/Messaging/Tests/FIRMessagingAnalyticsTest.m
+++ b/Example/Messaging/Tests/FIRMessagingAnalyticsTest.m
@@ -115,6 +115,8 @@ static FakeAnalyticsLogEventHandler _userPropertyHandler;
 - (void)setConditionalUserProperty:(nonnull NSDictionary<NSString *,id> *)conditionalUserProperty {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
 
 @interface FIRMessagingAnalytics (ExposedForTest)
diff --git a/FirebaseABTesting/Tests/Unit/ABTFakeFIRAConditionalUserPropertyController.m b/FirebaseABTesting/Tests/Unit/ABTFakeFIRAConditionalUserPropertyController.m
index 4de3f2bb27..53bda07e76 100644
--- a/FirebaseABTesting/Tests/Unit/ABTFakeFIRAConditionalUserPropertyController.m
+++ b/FirebaseABTesting/Tests/Unit/ABTFakeFIRAConditionalUserPropertyController.m
@@ -137,4 +137,6 @@
 - (void)unregisterAnalyticsListenerWithOrigin:(nonnull NSString *)origin {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
diff --git a/FirebaseAnalyticsInterop.podspec b/FirebaseAnalyticsInterop.podspec
index f6625172a2..9b3e0cb86e 100644
--- a/FirebaseAnalyticsInterop.podspec
+++ b/FirebaseAnalyticsInterop.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'FirebaseAnalyticsInterop'
-  s.version          = '1.3.0'
+  s.version          = '1.4.0'
   s.summary          = 'Interfaces that allow other Firebase SDKs to use Analytics functionality.'
 
   s.description      = <<-DESC
diff --git a/InAppMessaging/Example/Tests/FIRIAMAnalyticsEventLoggerImplTests.m b/InAppMessaging/Example/Tests/FIRIAMAnalyticsEventLoggerImplTests.m
index 767e02aaae..f8de3312a9 100644
--- a/InAppMessaging/Example/Tests/FIRIAMAnalyticsEventLoggerImplTests.m
+++ b/InAppMessaging/Example/Tests/FIRIAMAnalyticsEventLoggerImplTests.m
@@ -130,6 +130,8 @@ typedef void (^FakeAnalyticsLastNotificationHandler)(NSString *origin, LastNotif
 - (void)setConditionalUserProperty:(nonnull NSDictionary<NSString *, id> *)conditionalUserProperty {
 }
 
+- (void)getUserPropertiesWithCallback:(nonnull FIRAInteropUserPropertiesCallback)callback {
+}
 @end
 
 @implementation FIRIAMAnalyticsEventLoggerImplTests
diff --git a/Interop/Analytics/Public/FIRAnalyticsInterop.h b/Interop/Analytics/Public/FIRAnalyticsInterop.h
index dd706e742e..6581b5368d 100644
--- a/Interop/Analytics/Public/FIRAnalyticsInterop.h
+++ b/Interop/Analytics/Public/FIRAnalyticsInterop.h
@@ -20,6 +20,9 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+/// Block typedef callback parameter to getUserPropertiesWithCallback:.
+typedef void (^FIRAInteropUserPropertiesCallback)(NSDictionary<NSString *, id> *userProperties);
+
 /// Connector for bridging communication between Firebase SDKs and FirebaseAnalytics API.
 @protocol FIRAnalyticsInterop
 
@@ -40,6 +43,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// Returns the maximum number of user properties.
 - (NSInteger)maxUserProperties:(NSString *)origin;
 
+/// Returns the user properties to a callback function.
+- (void)getUserPropertiesWithCallback:(FIRAInteropUserPropertiesCallback)callback;
+
 /// Logs events.
 - (void)logEventWithOrigin:(NSString *)origin
                       name:(NSString *)name