diff --git a/pkgs/applications/networking/mailreaders/thunderbird/default.nix b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
index 7fd4e3e1515f..c1bee05c93b7 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/default.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
@@ -13,7 +13,7 @@
   enableOfficialBranding ? false
 }:
 
-let version = "38.6.0"; in
+let version = "38.7.0"; in
 let verName = "${version}"; in
 
 stdenv.mkDerivation rec {
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "http://archive.mozilla.org/pub/thunderbird/releases/${verName}/source/thunderbird-${verName}.source.tar.bz2";
-    sha256 = "0sssw45sf4vfy63y0x1lj05zl9g3gjdcvgw232k6zfm44l9p25q4";
+    sha256 = "1wbkj8a0p62mcbxlq8yyzrx51xi65qm8f2ccqiv5pb6qd51b5d0v";
   };
 
   buildInputs = # from firefox30Pkgs.xulrunner, but without gstreamer and libvpx