diff --git a/package.json b/package.json
index d291e963c09..50644c36580 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "typescript",
     "author": "Microsoft Corp.",
     "homepage": "http://typescriptlang.org/",
-    "version": "1.5.0-alpha",
+    "version": "1.5.0-beta",
     "licenses": [
         {
             "type": "Apache License 2.0",
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index c0259dc9986..5b3d9fe78dc 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -8,7 +8,7 @@ module ts {
     /* @internal */ export let ioWriteTime = 0;
 
     /** The version of the TypeScript compiler release */
-    export const version = "1.5.0-alpha";
+    export const version = "1.5.0-beta";
 
     export function findConfigFile(searchPath: string): string {
         var fileName = "tsconfig.json";