diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index 3d951a2b4e13..03648b0c6ff2 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -1,7 +1,7 @@
 { stdenv, lib, buildMozillaMach, callPackage, fetchurl, fetchpatch, nixosTests }:
 
 rec {
-  thunderbird = thunderbird-102;
+  thunderbird = thunderbird-115;
 
   thunderbird-102 = (buildMozillaMach rec {
     pname = "thunderbird";