diff --git a/nixos/modules/services/web-apps/mealie.nix b/nixos/modules/services/web-apps/mealie.nix
index 46571fea4617..b8f65b1fb98e 100644
--- a/nixos/modules/services/web-apps/mealie.nix
+++ b/nixos/modules/services/web-apps/mealie.nix
@@ -76,7 +76,7 @@ in
         API_PORT = toString cfg.port;
         BASE_URL = "http://localhost:${toString cfg.port}";
         DATA_DIR = "/var/lib/mealie";
-        NLTK_DATA = pkgs.nltk-data.averaged_perceptron_tagger_eng;
+        NLTK_DATA = pkgs.nltk-data.averaged-perceptron-tagger-eng;
       } // (builtins.mapAttrs (_: val: toString val) cfg.settings);
 
       serviceConfig = {
diff --git a/pkgs/by-name/me/mealie/package.nix b/pkgs/by-name/me/mealie/package.nix
index 0092eab6b5f3..6a7897f9a79f 100644
--- a/pkgs/by-name/me/mealie/package.nix
+++ b/pkgs/by-name/me/mealie/package.nix
@@ -109,7 +109,7 @@ pythonpkgs.buildPythonApplication rec {
 
   # Needed for tests
   preCheck = ''
-    export NLTK_DATA=${nltk-data.averaged_perceptron_tagger_eng}
+    export NLTK_DATA=${nltk-data.averaged-perceptron-tagger-eng}
   '';
 
   disabledTestPaths = [
diff --git a/pkgs/development/python-modules/ingredient-parser-nlp/default.nix b/pkgs/development/python-modules/ingredient-parser-nlp/default.nix
index 88d03d362361..ee07bd34acd3 100644
--- a/pkgs/development/python-modules/ingredient-parser-nlp/default.nix
+++ b/pkgs/development/python-modules/ingredient-parser-nlp/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
 
   # Needed for tests
   preCheck = ''
-    export NLTK_DATA=${nltk-data.averaged_perceptron_tagger_eng}
+    export NLTK_DATA=${nltk-data.averaged-perceptron-tagger-eng}
   '';
 
   meta = {
diff --git a/pkgs/tools/text/nltk-data/default.nix b/pkgs/tools/text/nltk-data/default.nix
index c4a99c0456c3..96125bd351f2 100644
--- a/pkgs/tools/text/nltk-data/default.nix
+++ b/pkgs/tools/text/nltk-data/default.nix
@@ -71,7 +71,7 @@ lib.makeScope newScope (self: {
     location = "taggers";
     hash = "sha256-tl3Cn2okhBkUtTXvAmFRx72Brez6iTGRdmFTwFmpk3M=";
   };
-  averaged_perceptron_tagger_eng = makeNltkDataPackage {
+  averaged-perceptron-tagger-eng = makeNltkDataPackage {
     pname = "averaged_perceptron_tagger_eng";
     location = "taggers";
     hash = "sha256-tl3Cn2okhBkUtTXvAmFRx72Brez6iTGRdmFTwFmpk3M=";
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 4019d2823ee3..6585e44b1b47 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1350,6 +1350,7 @@ mapAliases {
 
   nixosTest = testers.nixosTest; # Added 2022-05-05
   nltk-data.averaged_perceptron_tagger = nltk-data.averaged-perceptron-tagger; # Added 2025-05-21
+  nltk-data.averaged_perceptron_tagger_eng = nltk-data.averaged-perceptron-tagger-eng; # Added 2025-05-21
   nltk-data.punkt_tab = nltk-data.punkt-tab; # Added 2025-05-21
   nmap-unfree = throw "'nmap-unfree' has been renamed to/replaced by 'nmap'"; # Converted to throw 2024-10-17
   noah = throw "'noah' has been removed because it was broken and its upstream archived"; # Added 2025-05-10