diff --git a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
index 1ceb0e78b670..d3b9aec99a8a 100644
--- a/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
+++ b/pkgs/applications/networking/mailreaders/thunderbird/packages.nix
@@ -124,21 +124,9 @@ rec {
       versionSuffix = "esr";
     };
   };
-
-  thunderbird-128 = common {
-    applicationName = "Thunderbird ESR";
-
-    version = "128.14.0esr";
-    sha512 = "3ce2debe024ad8dafc319f86beff22feb9edecfabfad82513269e037a51210dfd84810fe35adcf76479273b8b2ceb8d4ecd2d0c6a3c5f6600b6b3df192bb798b";
-
-    updateScript = callPackage ./update.nix {
-      attrPath = "thunderbirdPackages.thunderbird-128";
-      versionPrefix = "128";
-      versionSuffix = "esr";
-    };
-  };
 }
 // lib.optionalAttrs config.allowAliases {
   thunderbird-102 = throw "Thunderbird 102 support ended in September 2023";
   thunderbird-115 = throw "Thunderbird 115 support ended in October 2024";
+  thunderbird-128 = throw "Thunderbird 128 support ended in August 2025";
 }
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 6fd8ea31bf47..a29bf448037d 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2505,6 +2505,8 @@ mapAliases {
   tfplugindocs = terraform-plugin-docs; # Added 2023-11-01
   thiefmd = throw "'thiefmd' has been removed due to lack of maintenance upstream and incompatible with newer Pandoc. Please use 'apostrophe' or 'folio' instead"; # Added 2025-02-20
   thefuck = throw "'thefuck' has been removed due to lack of maintenance upstream and incompatible with python 3.12+. Consider using 'pay-respects' instead"; # Added 2025-05-30
+  thunderbird-128 = throw "Thunderbird 128 support ended in August 2025";
+  thunderbird-128-unwrapped = throw "Thunderbird 128 support ended in August 2025";
   invalidateFetcherByDrvHash = testers.invalidateFetcherByDrvHash; # Added 2022-05-05
   ticpp = throw "'ticpp' has been removed due to being unmaintained"; # Added 2025-09-10
   tijolo = throw "'tijolo' has been removed due to being unmaintained"; # Added 2024-12-27
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 727a3546353b..acf7d1c82534 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12868,9 +12868,6 @@ with pkgs;
   thunderbird-esr-unwrapped = thunderbirdPackages.thunderbird-esr;
   thunderbird-esr = wrapThunderbird thunderbird-esr-unwrapped { };
 
-  thunderbird-128-unwrapped = thunderbirdPackages.thunderbird-128;
-  thunderbird-128 = wrapThunderbird thunderbirdPackages.thunderbird-128 { };
-
   thunderbird-140-unwrapped = thunderbirdPackages.thunderbird-140;
   thunderbird-140 = wrapThunderbird thunderbirdPackages.thunderbird-140 { };