diff --git a/Account/Package.swift b/Account/Package.swift
index 30b2ae389..4efd91a47 100644
--- a/Account/Package.swift
+++ b/Account/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/Articles/Package.swift b/Articles/Package.swift
index f95ad218b..86299ca10 100644
--- a/Articles/Package.swift
+++ b/Articles/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/ArticlesDatabase/Package.swift b/ArticlesDatabase/Package.swift
index b4d723921..7f1aed59d 100644
--- a/ArticlesDatabase/Package.swift
+++ b/ArticlesDatabase/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/RSCore/Package.swift b/RSCore/Package.swift
index d46a769f0..e855dba57 100644
--- a/RSCore/Package.swift
+++ b/RSCore/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/RSWeb/Package.swift b/RSWeb/Package.swift
index afa089807..02802e14d 100644
--- a/RSWeb/Package.swift
+++ b/RSWeb/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/Secrets/Package.swift b/Secrets/Package.swift
index 715adc925..72fb1184c 100644
--- a/Secrets/Package.swift
+++ b/Secrets/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/SyncDatabase/Package.swift b/SyncDatabase/Package.swift
index dd63924a4..5b5dd70a5 100644
--- a/SyncDatabase/Package.swift
+++ b/SyncDatabase/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 
 import PackageDescription
 
diff --git a/xcconfig/NetNewsWire_project.xcconfig b/xcconfig/NetNewsWire_project.xcconfig
index 025e6300e..3f9045739 100644
--- a/xcconfig/NetNewsWire_project.xcconfig
+++ b/xcconfig/NetNewsWire_project.xcconfig
@@ -46,7 +46,7 @@ SWIFT_SWIFT3_OBJC_INFERENCE = Off
 WARNING_CFLAGS = -Werror
 GCC_TREAT_WARNINGS_AS_ERRORS = YES
 SWIFT_TREAT_WARNINGS_AS_ERRORS = YES
-SWIFT_VERSION = 5.9
+SWIFT_VERSION = 5.10
 
 // 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