diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index cd1c98e9c85b..aebb182dcb23 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -5,13 +5,13 @@ rec {
 
   thunderbird-102 = (buildMozillaMach rec {
     pname = "thunderbird";
-    version = "102.3.0";
+    version = "102.3.1";
     application = "comm/mail";
     applicationName = "Mozilla Thunderbird";
     binaryName = pname;
     src = fetchurl {
       url = "mirror://mozilla/thunderbird/releases/${version}/source/thunderbird-${version}.source.tar.xz";
-      sha512 = "9b9908d9f7b1281df5b2c74a25211973e25d9b780f05b9550c89e5aeb8b39070c517a1a33d0d84a33ed26dbcef99058308b76c056bd4e34987c32f0600e3882e";
+      sha512 = "8a127958b35c1c14b8acaa3ac256f8a3a7e9bde89fc810299ae4036c80c41d0c0d45c85ed47099d6ec37e2774a6bdeefe0de6b0b4b8bceca8206c7e54c3f93c1";
     };
     extraPatches = [
       # The file to be patched is different from firefox's `no-buildconfig-ffx90.patch`.