diff --git a/Package.swift b/Package.swift
index ee4a16708..652bac541 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.7
+// swift-tools-version:5.5
 
 import PackageDescription
 
diff --git a/Sources/Snowplow/VisionOS/Entities/ComponentEntity.swift b/Sources/Snowplow/VisionOS/Entities/ComponentEntity.swift
index 7cf92c218..350b7c64c 100644
--- a/Sources/Snowplow/VisionOS/Entities/ComponentEntity.swift
+++ b/Sources/Snowplow/VisionOS/Entities/ComponentEntity.swift
@@ -12,7 +12,6 @@
 //  language governing permissions and limitations there under.
 
 import Foundation
-import RealityFoundation
 
 /**
  Properties for the RealityKit component entity.
diff --git a/Sources/Snowplow/VisionOS/Entities/TrackableAnchorEntity.swift b/Sources/Snowplow/VisionOS/Entities/TrackableAnchorEntity.swift
index 9343833ec..5a7a3e1ea 100644
--- a/Sources/Snowplow/VisionOS/Entities/TrackableAnchorEntity.swift
+++ b/Sources/Snowplow/VisionOS/Entities/TrackableAnchorEntity.swift
@@ -12,7 +12,10 @@
 //  language governing permissions and limitations there under.
 
 import Foundation
+
+#if canImport(ARKit)
 import ARKit
+#endif
 
 /// The type of TrackableAnchor.
 @objc(SPTrackableAnchorType)
@@ -51,6 +54,7 @@ public protocol ImageAnchorDetails {
     var nameDetails: String? { get }
 }
 
+#if canImport(ARKit)
 extension ARReferenceImage: ImageAnchorDetails {
     public var widthDetails: Double { return self.physicalSize.width }
     public var heightDetails: Double { return self.physicalSize.height }
@@ -58,6 +62,8 @@ extension ARReferenceImage: ImageAnchorDetails {
     public var nameDetails: String? { return self.name }
 }
 
+#endif
+
 /**
  Properties for the ARKit trackable anchor entity.
  Entity schema: `iglu:com.apple.arkit/trackable_anchor/jsonschema/1-0-0`
diff --git a/Tests/TestVisionOSSerialisation.swift b/Tests/TestVisionOSSerialisation.swift
index a001c73f2..c93a243fd 100644
--- a/Tests/TestVisionOSSerialisation.swift
+++ b/Tests/TestVisionOSSerialisation.swift
@@ -12,7 +12,6 @@
 //  language governing permissions and limitations there under.
 
 import XCTest
-import ARKit
 @testable import SnowplowTracker
 
 class TestVisionOSSerialisation: XCTestCase {
@@ -108,7 +107,7 @@ class TestVisionOSSerialisation: XCTestCase {
     func testBuildsWindowEntity() {
         let window = WindowEntity(
             id: "12345",
-            title: "window title",
+            titleKey: "window title",
             windowStyle: .automatic
         )
         let entity = window.data