diff --git a/pkgs/by-name/rl/rl_json/package.nix b/pkgs/development/tcl-modules/by-name/rl/rl_json/package.nix
similarity index 92%
rename from pkgs/by-name/rl/rl_json/package.nix
rename to pkgs/development/tcl-modules/by-name/rl/rl_json/package.nix
index c9c000718135..7a10f70c8d5d 100644
--- a/pkgs/by-name/rl/rl_json/package.nix
+++ b/pkgs/development/tcl-modules/by-name/rl/rl_json/package.nix
@@ -8,13 +8,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "rl_json";
-  version = "0.15.1";
+  version = "0.15.2";
 
   src = fetchFromGitHub {
     owner = "RubyLane";
     repo = "rl_json";
     rev = finalAttrs.version;
-    hash = "sha256-FkOsdOHPE75bSkKw3cdaech6jAv0f/RJ9tgRVzPSAdA=";
+    hash = "sha256-y62N4DK80baJx7tQ562ZWOEpKcDldKS1pEwR7NpzuZQ=";
     fetchSubmodules = true;
   };
 
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index ef77c150859e..8f898ec0d964 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1601,6 +1601,7 @@ mapAliases {
   rippled = throw "rippled has been removed as it was broken and had not been updated since 2022"; # Added 2024-11-25
   rippled-validator-keys-tool = throw "rippled-validator-keys-tool has been removed as it was broken and had not been updated since 2022"; # Added 2024-11-25
   rke2_testing = throw "'rke2_testing' has been removed from nixpkgs as the RKE2 testing channel no longer serves releases"; # Added 2025-06-02
+  rl_json = tclPackages.rl_json; # Added 2025-05-03
   rockbox_utility = rockbox-utility; # Added 2022-03-17
   rnix-hashes = throw "'rnix-hashes' has been removed due to lack of upstream maintenance"; # Added 2025-01-25
   rpiboot-unstable = throw "'rpiboot-unstable' has been renamed to/replaced by 'rpiboot'"; # Converted to throw 2024-10-17