diff --git a/Sources/SourceKitLSP/Swift/SwiftLanguageService.swift b/Sources/SourceKitLSP/Swift/SwiftLanguageService.swift
index ed341adb..69a3b5cd 100644
--- a/Sources/SourceKitLSP/Swift/SwiftLanguageService.swift
+++ b/Sources/SourceKitLSP/Swift/SwiftLanguageService.swift
@@ -382,6 +382,7 @@ extension SwiftLanguageService {
       keys.enableDiagnostics: 0,
       keys.syntacticOnly: 1,
       keys.compilerArgs: compileCommand?.compilerArgs as [SKDRequestValue]?,
+      keys.cancelBuilds: 0,
     ])
   }