diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index a598216c9fff..fcf77335fd20 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -110,7 +110,20 @@ rec {
   };
 
   # Eventually, switch to an updateScript without versionPrefix hardcoded...
-  thunderbird-esr = thunderbird-128;
+  thunderbird-esr = thunderbird-140;
+
+  thunderbird-140 = common {
+    applicationName = "Thunderbird ESR";
+
+    version = "140.2.0esr";
+    sha512 = "6a10f95b805f00a0820c822ae07bc52ac39d0a55f084c319d27f01710d8a1d809b7b224da966632ae0a22658bf14e76c8fd7cec022718316c306c43809a4997d";
+
+    updateScript = callPackage ./update.nix {
+      attrPath = "thunderbirdPackages.thunderbird-140";
+      versionPrefix = "140";
+      versionSuffix = "esr";
+    };
+  };
 
   thunderbird-128 = common {
     applicationName = "Thunderbird ESR";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3a2391fb7cf6..904fc44be2dd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -13247,6 +13247,9 @@ with pkgs;
   thunderbird-128-unwrapped = thunderbirdPackages.thunderbird-128;
   thunderbird-128 = wrapThunderbird thunderbirdPackages.thunderbird-128 { };
 
+  thunderbird-140-unwrapped = thunderbirdPackages.thunderbird-140;
+  thunderbird-140 = wrapThunderbird thunderbirdPackages.thunderbird-140 { };
+
   thunderbird-bin = thunderbird-latest-bin;
   thunderbird-latest-bin = wrapThunderbird thunderbird-latest-bin-unwrapped {
     pname = "thunderbird-bin";