diff --git a/pkgbuild/thunderbird-nightly/PKGBUILD b/pkgbuild/thunderbird-nightly/PKGBUILD
index eaded7c..f41a96d 100644
--- a/pkgbuild/thunderbird-nightly/PKGBUILD
+++ b/pkgbuild/thunderbird-nightly/PKGBUILD
@@ -3,8 +3,8 @@
 # Based on [extra]'s thunderbird
 
 pkgname=thunderbird-nightly
-pkgver=39.0a1.20150225
-_version=39.0a1
+pkgver=40.0a1.20150331
+_version=40.0a1
 pkgrel=1
 pkgdesc="Standalone Mail/News reader - Nightly build"
 arch=('i686' 'x86_64')