diff --git a/pkgs/applications/networking/mailreaders/thunderbird/default.nix b/pkgs/applications/networking/mailreaders/thunderbird/default.nix
index fb78c3cca24a..cd16b73dc5d6 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 = "45.5.1"; in
+let version = "45.6.0"; in
 let verName = "${version}"; in
 
 stdenv.mkDerivation rec {
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://mozilla/thunderbird/releases/${verName}/source/thunderbird-${verName}.source.tar.xz";
-    sha512 = "f6dc5f526e50facb9947627fcbc8db222cc20438fa62c552090dcabeabcc31dba2c66c20345090deaf5b58fd42b54938935eb1b3904528dce5949fd4cfc1ceb7";
+    sha512 = "1f4579ac37b8ab98c91fe2e3e6742ba1b005ca9346d23f467d19e6af45eb457cab749bf91ed2a79f2058bd66f54da661da3ea5d5786f8c4b472d8a2a6c34db4b";
   };
 
   buildInputs = # from firefox30Pkgs.xulrunner, without gstreamer and libvpx