diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1187f2e8df..9acd565130 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,16 @@
 
 The changelog for `SuperwallKit`. Also see the [releases](https://github.com/superwall/Superwall-iOS/releases) on GitHub.
 
+## 4.16.1
+
+### Enhancements
+
+- Clarifies that `IntegrationAttribute.onesignalId` should be set to the OneSignal User ID used by the OneSignal integration.
+
+### Fixes
+
+- Makes sure that the compiler directive is correct for billing plan types so that the SDK builds in Xcode version 26.4.
+
 ## 4.16.0
 
 ### Enhancements
diff --git a/Sources/SuperwallKit/Analytics/Attribution/IntegrationAttribute.swift b/Sources/SuperwallKit/Analytics/Attribution/IntegrationAttribute.swift
index 29603c987c..d0a713f32a 100644
--- a/Sources/SuperwallKit/Analytics/Attribution/IntegrationAttribute.swift
+++ b/Sources/SuperwallKit/Analytics/Attribution/IntegrationAttribute.swift
@@ -26,7 +26,7 @@ public enum IntegrationAttribute: Int {
   /// The Braze `alias_label` in User Alias Object.
   case brazeAliasLabel
 
-  /// The OneSignal Player identifier for the user.
+  /// The OneSignal User ID (`onesignal_id`) for the user.
   case onesignalId
 
   /// The Facebook Anonymous identifier for the user.
diff --git a/Sources/SuperwallKit/Misc/Constants.swift b/Sources/SuperwallKit/Misc/Constants.swift
index 5338fe7359..e38ade56b0 100644
--- a/Sources/SuperwallKit/Misc/Constants.swift
+++ b/Sources/SuperwallKit/Misc/Constants.swift
@@ -18,5 +18,5 @@ let sdkVersion = """
 */
 
 let sdkVersion = """
-4.16.0
+4.16.1
 """
diff --git a/Sources/SuperwallKit/Network/Device Helper/SwiftVersion.swift b/Sources/SuperwallKit/Network/Device Helper/SwiftVersion.swift
index b8b16685d7..89a92fb2cc 100644
--- a/Sources/SuperwallKit/Network/Device Helper/SwiftVersion.swift	
+++ b/Sources/SuperwallKit/Network/Device Helper/SwiftVersion.swift	
@@ -110,7 +110,13 @@ extension DeviceHelper {
   }
 
   func currentCompilerVersion() -> String {
-  #if compiler(>=6.3)
+  #if compiler(>=6.4)
+    return "6.4"
+  #elseif compiler(>=6.3.3)
+    return "6.3.3"
+  #elseif compiler(>=6.3.2)
+    return "6.3.2"
+  #elseif compiler(>=6.3)
     return "6.3"
   #elseif compiler(>=6.2.4)
     return "6.2.4"
diff --git a/Sources/SuperwallKit/StoreKit/Products/StoreProduct/SK2StoreProduct.swift b/Sources/SuperwallKit/StoreKit/Products/StoreProduct/SK2StoreProduct.swift
index 2480c66d8b..058c97f0f5 100644
--- a/Sources/SuperwallKit/StoreKit/Products/StoreProduct/SK2StoreProduct.swift
+++ b/Sources/SuperwallKit/StoreKit/Products/StoreProduct/SK2StoreProduct.swift
@@ -43,7 +43,7 @@ struct SK2StoreProduct: StoreProductType {
     self.entitlements = entitlements
     self.billingPlanType = billingPlanType
 
-    #if compiler(>=6.3)
+    #if compiler(>=6.3.2)
     if #available(iOS 26.4, macOS 26.4, tvOS 26.4, watchOS 26.4, visionOS 26.4, *),
       let term = Self.findPricingTerm(for: billingPlanType, in: sk2Product) {
       // Use the commitment *period* (= year for an annual MONTHLY product)
@@ -240,7 +240,7 @@ struct SK2StoreProduct: StoreProductType {
     return underlyingSK2Product.subscription?.introductoryOffer
   }
 
-  #if compiler(>=6.3)
+  #if compiler(>=6.3.2)
   @available(iOS 26.4, macOS 26.4, tvOS 26.4, watchOS 26.4, visionOS 26.4, *)
   private static func findPricingTerm(
     for billingPlanType: AppStoreProduct.BillingPlanType?,
diff --git a/Sources/SuperwallKit/StoreKit/Transactions/Purchasing/StoreKit 2/ProductPurchaserSK2.swift b/Sources/SuperwallKit/StoreKit/Transactions/Purchasing/StoreKit 2/ProductPurchaserSK2.swift
index dd6174cc90..7b584ec896 100644
--- a/Sources/SuperwallKit/StoreKit/Transactions/Purchasing/StoreKit 2/ProductPurchaserSK2.swift	
+++ b/Sources/SuperwallKit/StoreKit/Transactions/Purchasing/StoreKit 2/ProductPurchaserSK2.swift	
@@ -101,10 +101,7 @@ final class ProductPurchaserSK2: Purchasing {
       }
       #endif
 
-      #if compiler(>=6.3)
-      // Apply the configured Apple billing plan (iOS 26+). If the runtime is
-      // older or no plan is configured, the purchase proceeds with Apple's
-      // default plan.
+      #if compiler(>=6.3.2)
       if #available(iOS 26.4, macOS 26.4, tvOS 26.4, watchOS 26.4, visionOS 26.4, *),
         let plan = product.billingPlanType {
         let sk2Plan: StoreKit.Product.SubscriptionInfo.BillingPlanType
diff --git a/SuperwallKit.podspec b/SuperwallKit.podspec
index 27d2d5647d..3115a9e217 100644
--- a/SuperwallKit.podspec
+++ b/SuperwallKit.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
 	s.name         = "SuperwallKit"
-  s.version      = "4.16.0"
+  s.version      = "4.16.1"
 	s.summary      = "Superwall: In-App Paywalls Made Easy"
 	s.description  = "Paywall infrastructure for mobile apps :) we make things like editing your paywall and running price tests as easy as clicking a few buttons. superwall.com"