diff --git a/libphonenumber_plugin/ios/libphonenumber_plugin.podspec b/libphonenumber_plugin/ios/libphonenumber_plugin.podspec
index f668b86..95d7841 100644
--- a/libphonenumber_plugin/ios/libphonenumber_plugin.podspec
+++ b/libphonenumber_plugin/ios/libphonenumber_plugin.podspec
@@ -15,11 +15,11 @@ A new flutter plugin project.
   s.source           = { :path => '.' }
   s.source_files = 'Classes/**/*'
   s.dependency 'Flutter'
-  s.dependency 'PhoneNumberKit'
+  s.dependency 'PhoneNumberKit', '~> 3.7' 
   
-  s.platform = :ios, '12.0'
+  s.platform = :ios, '13.0'
 
   # Flutter.framework does not contain a i386 slice.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
-  s.swift_version = '5.0'
+  s.swift_version = '5.5'
 end