diff --git a/Package.swift b/Package.swift
index b8312ca..57e8665 100644
--- a/Package.swift
+++ b/Package.swift
@@ -19,5 +19,5 @@ let package = Package(
       "Spectre"
     ])
   ],
-  swiftLanguageVersions: [.v4, .v4_2]
+  swiftLanguageVersions: [.v4_2]
 )
diff --git a/Package@swift-5.swift b/Package@swift-5.swift
index 43b97ee..b4141c4 100644
--- a/Package@swift-5.swift
+++ b/Package@swift-5.swift
@@ -19,5 +19,5 @@ let package = Package(
       "Spectre"
     ])
   ],
-  swiftLanguageVersions: [.v4, .v4_2, .v5]
+  swiftLanguageVersions: [.v4_2, .v5]
 )