diff --git a/ios-voice-processor.podspec b/ios-voice-processor.podspec
index 367a5e6..4d1a993 100644
--- a/ios-voice-processor.podspec
+++ b/ios-voice-processor.podspec
@@ -23,6 +23,7 @@ Pod::Spec.new do |s|
   s.source           = { :git => 'https://github.com/Picovoice/ios-voice-processor.git', :tag => s.version.to_s }
 
   s.ios.deployment_target = '13.0'
+  s.swift_version = '5.0'
   s.source_files = 'src/ios_voice_processor/VoiceProcessor*.swift'
   s.frameworks = 'AVFoundation'
 end