diff --git a/src/services/shims.ts b/src/services/shims.ts
index fc47ff95280..63e3c9e23ae 100644
--- a/src/services/shims.ts
+++ b/src/services/shims.ts
@@ -833,3 +833,5 @@ module ts {
 module TypeScript.Services {
     export var TypeScriptServicesFactory = ts.TypeScriptServicesFactory;
 }
+
+let toolsVersion = "1.4";