diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index 1e968220efee7..1e4ca1bf9e5f6 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -29,6 +29,7 @@ rec {
       broken = stdenv.buildPlatform.is32bit; # since Firefox 60, build on 32-bit platforms fails with "out of memory".
                                              # not in `badPlatforms` because cross-compilation on 64-bit machine might work.
       license = licenses.mpl20;
+      knownVulnerabilities = [ "Thunderbird 102 support has ended" ];
     };
     updateScript = callPackage ./update.nix {
       attrPath = "thunderbird-unwrapped";