diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index c221835f9a6..9c903046900 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -714,7 +714,7 @@ in {
   service-runner = handleTest ./service-runner.nix {};
   sftpgo = runTest ./sftpgo.nix;
   sfxr-qt = handleTest ./sfxr-qt.nix {};
-  sgtpuzzles = handleTest ./sgtpuzzles.nix {};
+  sgt-puzzles = handleTest ./sgt-puzzles.nix {};
   shadow = handleTest ./shadow.nix {};
   shadowsocks = handleTest ./shadowsocks {};
   shattered-pixel-dungeon = handleTest ./shattered-pixel-dungeon.nix {};
diff --git a/nixos/tests/sgtpuzzles.nix b/nixos/tests/sgt-puzzles.nix
similarity index 92%
rename from nixos/tests/sgtpuzzles.nix
rename to nixos/tests/sgt-puzzles.nix
index b8d25d42d31..4c5210bfce7 100644
--- a/nixos/tests/sgtpuzzles.nix
+++ b/nixos/tests/sgt-puzzles.nix
@@ -1,6 +1,6 @@
 import ./make-test-python.nix ({ pkgs, ...} :
 {
-  name = "sgtpuzzles";
+  name = "sgt-puzzles";
   meta = with pkgs.lib.maintainers; {
     maintainers = [ tomfitzhenry ];
   };
@@ -14,7 +14,7 @@ import ./make-test-python.nix ({ pkgs, ...} :
 
     services.xserver.enable = true;
     environment.systemPackages = with pkgs; [
-      sgtpuzzles
+      sgt-puzzles
     ];
   };
 
diff --git a/pkgs/games/sgt-puzzles/default.nix b/pkgs/games/sgt-puzzles/default.nix
index a161d8d68ef..8173fb5fe1d 100644
--- a/pkgs/games/sgt-puzzles/default.nix
+++ b/pkgs/games/sgt-puzzles/default.nix
@@ -60,15 +60,15 @@ stdenv.mkDerivation rec {
   '';
 
   passthru = {
-    tests.sgtpuzzles = nixosTests.sgtpuzzles;
-    updateScript = writeScript "update-sgtpuzzles" ''
+    tests.sgt-puzzles = nixosTests.sgt-puzzles;
+    updateScript = writeScript "update-sgt-puzzles" ''
       #!/usr/bin/env nix-shell
       #!nix-shell -i bash -p curl pcre common-updater-scripts
 
       set -eu -o pipefail
 
       version="$(curl -sI 'https://www.chiark.greenend.org.uk/~sgtatham/puzzles/puzzles.tar.gz' | grep -Fi Location: | pcregrep -o1 'puzzles-([0-9a-f.]*).tar.gz')"
-      update-source-version sgtpuzzles "$version"
+      update-source-version sgt-puzzles "$version"
     '';
   };
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index faa6d3e35a8..51eb556ff49 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -38476,12 +38476,15 @@ with pkgs;
 
   sfrotz = callPackage ../games/sfrotz { };
 
-  sgtpuzzles = callPackage ../games/sgt-puzzles { };
+  sgt-puzzles = callPackage ../games/sgt-puzzles { };
 
-  sgtpuzzles-mobile = callPackage ../games/sgt-puzzles {
+  sgt-puzzles-mobile = callPackage ../games/sgt-puzzles {
     isMobile = true;
   };
 
+  sgtpuzzles = throw "sgtpuzzles has been renamed to sgt-puzzles."; # 2023-10-06
+  sgtpuzzles-mobile = throw "sgtpuzzles-mobile has been renamed to sgt-puzzles-mobile."; # 2023-10-06
+
   shattered-pixel-dungeon = callPackage ../games/shattered-pixel-dungeon { };
 
   shticker-book-unwritten = callPackage ../games/shticker-book-unwritten { };