diff --git a/xcconfig/NetNewsWire_iOSapp_target.xcconfig b/xcconfig/NetNewsWire_iOSapp_target.xcconfig
index 0d5ed6927..3c5f63c71 100644
--- a/xcconfig/NetNewsWire_iOSapp_target.xcconfig
+++ b/xcconfig/NetNewsWire_iOSapp_target.xcconfig
@@ -43,4 +43,4 @@ PRODUCT_BUNDLE_IDENTIFIER = $(ORGANIZATION_IDENTIFIER).NetNewsWire.iOS
 PRODUCT_NAME = NetNewsWire
 CLANG_ENABLE_MODULES = YES
 SWIFT_OBJC_BRIDGING_HEADER = iOS/Resources/NetNewsWire-iOS-Bridging-Header.h
-SWIFT_VERSION = 5.0
+SWIFT_VERSION = 5.7
diff --git a/xcconfig/NetNewsWire_project.xcconfig b/xcconfig/NetNewsWire_project.xcconfig
index 463ee17ba..e99157096 100644
--- a/xcconfig/NetNewsWire_project.xcconfig
+++ b/xcconfig/NetNewsWire_project.xcconfig
@@ -43,7 +43,7 @@ MACOSX_DEPLOYMENT_TARGET = 13.0
 IPHONEOS_DEPLOYMENT_TARGET = 16.0
 //SDKROOT = macosx
 SWIFT_SWIFT3_OBJC_INFERENCE = Off
-SWIFT_VERSION = 5.1
+SWIFT_VERSION = 5.7
 
 // https://forums.swift.org/t/swift-packages-in-multiple-targets-results-in-this-will-result-in-duplication-of-library-code-errors/34892/33
 DISABLE_DIAMOND_PROBLEM_DIAGNOSTIC = YES