diff --git a/Amplitude-Swift.xcodeproj/project.pbxproj b/Amplitude-Swift.xcodeproj/project.pbxproj
index 1deb68ff..455f23ac 100644
--- a/Amplitude-Swift.xcodeproj/project.pbxproj
+++ b/Amplitude-Swift.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 52;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXAggregateTarget section */
diff --git a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample.xcodeproj/project.pbxproj b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample.xcodeproj/project.pbxproj
index 216f6b12..5b4bcf4c 100644
--- a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample.xcodeproj/project.pbxproj
+++ b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample.xcodeproj/project.pbxproj
@@ -15,6 +15,7 @@
 		19C9CC222937F5A600C1E660 /* AmplitudeSwiftUIExample.xcdatamodeld in Sources */ = {isa = PBXBuildFile; fileRef = 19C9CC202937F5A600C1E660 /* AmplitudeSwiftUIExample.xcdatamodeld */; };
 		19C9CC2D2937F5D000C1E660 /* AmplitudeSwift in Frameworks */ = {isa = PBXBuildFile; productRef = 19C9CC2C2937F5D000C1E660 /* AmplitudeSwift */; };
 		3A3036482A4B45780004CF0B /* TroubleShootingPlugin.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A3036472A4B45780004CF0B /* TroubleShootingPlugin.swift */; };
+		3A42EB922B87CDE30044FD45 /* FilterPlugin.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A42EB912B87CDE30044FD45 /* FilterPlugin.swift */; };
 		3A4E19BD2941D885002EA8BC /* IDFACollectionPlugin.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A4E19BC2941D86E002EA8BC /* IDFACollectionPlugin.swift */; };
 		58324F75294BF7CF00C71E2E /* WidgetKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 58324F74294BF7CF00C71E2E /* WidgetKit.framework */; };
 		58324F77294BF7CF00C71E2E /* SwiftUI.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 58324F76294BF7CF00C71E2E /* SwiftUI.framework */; };
@@ -88,6 +89,7 @@
 		19C9CC292937F5B200C1E660 /* AmplitudeSwift */ = {isa = PBXFileReference; lastKnownFileType = wrapper; name = AmplitudeSwift; path = ../..; sourceTree = "<group>"; };
 		19C9CC2A2937F5C900C1E660 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
 		3A3036472A4B45780004CF0B /* TroubleShootingPlugin.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TroubleShootingPlugin.swift; sourceTree = "<group>"; };
+		3A42EB912B87CDE30044FD45 /* FilterPlugin.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FilterPlugin.swift; sourceTree = "<group>"; };
 		3A4E19BC2941D86E002EA8BC /* IDFACollectionPlugin.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IDFACollectionPlugin.swift; sourceTree = "<group>"; };
 		58324F73294BF7CF00C71E2E /* iOSWidgetExampleExtension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = iOSWidgetExampleExtension.appex; sourceTree = BUILT_PRODUCTS_DIR; };
 		58324F74294BF7CF00C71E2E /* WidgetKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = WidgetKit.framework; path = System/Library/Frameworks/WidgetKit.framework; sourceTree = SDKROOT; };
@@ -206,6 +208,7 @@
 				BA541E9A2A8B587E0088D841 /* LocationPlugin.swift */,
 				3A4E19BC2941D86E002EA8BC /* IDFACollectionPlugin.swift */,
 				3A3036472A4B45780004CF0B /* TroubleShootingPlugin.swift */,
+				3A42EB912B87CDE30044FD45 /* FilterPlugin.swift */,
 			);
 			path = ExamplePlugins;
 			sourceTree = "<group>";
@@ -394,6 +397,7 @@
 				3A4E19BD2941D885002EA8BC /* IDFACollectionPlugin.swift in Sources */,
 				58324F84294BF7CF00C71E2E /* iOSWidgetExample.intentdefinition in Sources */,
 				3A3036482A4B45780004CF0B /* TroubleShootingPlugin.swift in Sources */,
+				3A42EB922B87CDE30044FD45 /* FilterPlugin.swift in Sources */,
 				BA541E9B2A8B587E0088D841 /* LocationPlugin.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
diff --git a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/AmplitudeSwiftUIExampleApp.swift b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/AmplitudeSwiftUIExampleApp.swift
index 9e8f6202..97dc3a44 100644
--- a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/AmplitudeSwiftUIExampleApp.swift
+++ b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/AmplitudeSwiftUIExampleApp.swift
@@ -20,6 +20,7 @@ struct AmplitudeSwiftUIExampleApp: App {
         Amplitude.testInstance.add(plugin: LocationPlugin())
         // add the trouble shooting plugin for debugging
         Amplitude.testInstance.add(plugin: TroubleShootingPlugin())
+        Amplitude.testInstance.add(plugin: FilterPlugin())
 
         Amplitude.experimentClient.fetch(user: nil, completion: nil)
     }
diff --git a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ContentView.swift b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ContentView.swift
index 1382b0be..c0084ba7 100644
--- a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ContentView.swift
+++ b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ContentView.swift
@@ -88,6 +88,17 @@ struct ContentView: View {
                             Text("Send Revenue Event")
                         }.buttonStyle(AmplitudeButton())
                     }
+                    Section(header: Text("FILTERED EVENT")) {
+                        HStack {
+                            Button(action: {
+                                print("Send event")
+                                Amplitude.testInstance.track(eventType: "Filtered Event")
+                            }) {
+                                Text("Event Should Be Filtered")
+                            }.buttonStyle(AmplitudeButton())
+
+                        }
+                    }
                     Section(header: Text("IDENTIFY")) {
                         HStack {
                             TextField("User Property Key", text: $userPropertyKey)
diff --git a/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ExamplePlugins/FilterPlugin.swift b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ExamplePlugins/FilterPlugin.swift
new file mode 100644
index 00000000..c9276884
--- /dev/null
+++ b/Examples/AmplitudeSwiftUIExample/AmplitudeSwiftUIExample/ExamplePlugins/FilterPlugin.swift
@@ -0,0 +1,18 @@
+//
+//  FilterPlugin.swift
+//  AmplitudeSwiftUIExample
+//
+//  Created by Alyssa.Yu on 2/22/24.
+//
+
+import Foundation
+import AmplitudeSwift
+
+class FilterPlugin: EnrichmentPlugin {
+    public override func execute(event: BaseEvent) -> BaseEvent? {
+        guard event.eventType != "Filtered Event" else {
+            return nil
+        }
+        return event
+    }
+}
diff --git a/Sources/Amplitude/Mediator.swift b/Sources/Amplitude/Mediator.swift
index 130c50a0..7dbfaae3 100644
--- a/Sources/Amplitude/Mediator.swift
+++ b/Sources/Amplitude/Mediator.swift
@@ -23,7 +23,7 @@ internal class Mediator {
         }
     }
 
-    internal func execute(event: BaseEvent) -> BaseEvent? {
+    internal func execute(event: BaseEvent?) -> BaseEvent? {
         var result: BaseEvent? = event
         plugins.forEach { plugin in
             if let r = result {
diff --git a/Sources/Amplitude/Timeline.swift b/Sources/Amplitude/Timeline.swift
index f656f341..49c91126 100644
--- a/Sources/Amplitude/Timeline.swift
+++ b/Sources/Amplitude/Timeline.swift
@@ -28,7 +28,7 @@ public class Timeline {
     internal func applyPlugin(pluginType: PluginType, event: BaseEvent?) -> BaseEvent? {
         var result: BaseEvent? = event
         if let mediator = plugins[pluginType] {
-            result = mediator.execute(event: event!)
+            result = mediator.execute(event: event)
         }
         return result
     }