diff --git a/packages/shared_preferences/shared_preferences_foundation/CHANGELOG.md b/packages/shared_preferences/shared_preferences_foundation/CHANGELOG.md
index d68c11162d4..7bbf5322a08 100644
--- a/packages/shared_preferences/shared_preferences_foundation/CHANGELOG.md
+++ b/packages/shared_preferences/shared_preferences_foundation/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.3.1
+
+* Fixes variable binding bug on older versions of Xcode.
+
 ## 2.3.0
 
 * Adds `clearWithParameters` and `getAllWithParameters` methods.
diff --git a/packages/shared_preferences/shared_preferences_foundation/darwin/Classes/SharedPreferencesPlugin.swift b/packages/shared_preferences/shared_preferences_foundation/darwin/Classes/SharedPreferencesPlugin.swift
index bb91ca0bd56..fcfe97e568c 100644
--- a/packages/shared_preferences/shared_preferences_foundation/darwin/Classes/SharedPreferencesPlugin.swift
+++ b/packages/shared_preferences/shared_preferences_foundation/darwin/Classes/SharedPreferencesPlugin.swift
@@ -55,7 +55,7 @@ public class SharedPreferencesPlugin: NSObject, FlutterPlugin, UserDefaultsApi {
   func getAllPrefs(prefix: String, allowList: [String]?) -> [String: Any] {
     var filteredPrefs: [String: Any] = [:]
     var allowSet: Set<String>?;
-    if let allowList {
+    if let allowList = allowList {
       allowSet = Set(allowList)
     }
     if let appDomain = Bundle.main.bundleIdentifier,
diff --git a/packages/shared_preferences/shared_preferences_foundation/pubspec.yaml b/packages/shared_preferences/shared_preferences_foundation/pubspec.yaml
index a6d714dcc04..1fd7a8c6660 100644
--- a/packages/shared_preferences/shared_preferences_foundation/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_foundation/pubspec.yaml
@@ -2,7 +2,7 @@ name: shared_preferences_foundation
 description: iOS and macOS implementation of the shared_preferences plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/shared_preferences/shared_preferences_foundation
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+shared_preferences%22
-version: 2.3.0
+version: 2.3.1
 
 environment:
   sdk: ">=2.18.0 <4.0.0"