diff --git a/docling_core/types/doc/document.py b/docling_core/types/doc/document.py
index 0f11001..56a66d0 100644
--- a/docling_core/types/doc/document.py
+++ b/docling_core/types/doc/document.py
@@ -661,65 +661,7 @@ class CodeItem(TextItem):
     label: typing.Literal[DocItemLabel.CODE] = (
         DocItemLabel.CODE  # type: ignore[assignment]
     )
-    code_language: typing.Literal[
-        CodeLanguageLabel.ADA,
-        CodeLanguageLabel.AWK,
-        CodeLanguageLabel.BASH,
-        CodeLanguageLabel.C,
-        CodeLanguageLabel.C_SHARP,
-        CodeLanguageLabel.C_PLUS_PLUS,
-        CodeLanguageLabel.CMAKE,
-        CodeLanguageLabel.COBOL,
-        CodeLanguageLabel.CSS,
-        CodeLanguageLabel.CEYLON,
-        CodeLanguageLabel.CLOJURE,
-        CodeLanguageLabel.CRYSTAL,
-        CodeLanguageLabel.CUDA,
-        CodeLanguageLabel.CYTHON,
-        CodeLanguageLabel.D,
-        CodeLanguageLabel.DART,
-        CodeLanguageLabel.DOCKERFILE,
-        CodeLanguageLabel.ELIXIR,
-        CodeLanguageLabel.ERLANG,
-        CodeLanguageLabel.FORTRAN,
-        CodeLanguageLabel.FORTH,
-        CodeLanguageLabel.GO,
-        CodeLanguageLabel.HTML,
-        CodeLanguageLabel.HASKELL,
-        CodeLanguageLabel.HAXE,
-        CodeLanguageLabel.JAVA,
-        CodeLanguageLabel.JAVASCRIPT,
-        CodeLanguageLabel.JULIA,
-        CodeLanguageLabel.KOTLIN,
-        CodeLanguageLabel.LISP,
-        CodeLanguageLabel.LUA,
-        CodeLanguageLabel.MATLAB,
-        CodeLanguageLabel.MOONSCRIPT,
-        CodeLanguageLabel.NIM,
-        CodeLanguageLabel.OCAML,
-        CodeLanguageLabel.OBJECTIVEC,
-        CodeLanguageLabel.OCTAVE,
-        CodeLanguageLabel.PHP,
-        CodeLanguageLabel.PASCAL,
-        CodeLanguageLabel.PERL,
-        CodeLanguageLabel.PROLOG,
-        CodeLanguageLabel.PYTHON,
-        CodeLanguageLabel.RACKET,
-        CodeLanguageLabel.RUBY,
-        CodeLanguageLabel.RUST,
-        CodeLanguageLabel.SML,
-        CodeLanguageLabel.SQL,
-        CodeLanguageLabel.SCALA,
-        CodeLanguageLabel.SCHEME,
-        CodeLanguageLabel.SWIFT,
-        CodeLanguageLabel.TYPESCRIPT,
-        CodeLanguageLabel.VISUALBASIC,
-        CodeLanguageLabel.XML,
-        CodeLanguageLabel.YAML,
-        CodeLanguageLabel.BC,
-        CodeLanguageLabel.DC,
-        CodeLanguageLabel.UNKNOWN,
-    ] = CodeLanguageLabel.UNKNOWN
+    code_language: CodeLanguageLabel = CodeLanguageLabel.UNKNOWN
 
 
 class SectionHeaderItem(TextItem):
diff --git a/docs/DoclingDocument.json b/docs/DoclingDocument.json
index c51acce..6d3a9fa 100644
--- a/docs/DoclingDocument.json
+++ b/docs/DoclingDocument.json
@@ -213,68 +213,8 @@
           "type": "string"
         },
         "code_language": {
-          "default": "unknown",
-          "enum": [
-            "Ada",
-            "Awk",
-            "Bash",
-            "C",
-            "C#",
-            "C++",
-            "CMake",
-            "COBOL",
-            "CSS",
-            "Ceylon",
-            "Clojure",
-            "Crystal",
-            "Cuda",
-            "Cython",
-            "D",
-            "Dart",
-            "Dockerfile",
-            "Elixir",
-            "Erlang",
-            "FORTRAN",
-            "Forth",
-            "Go",
-            "HTML",
-            "Haskell",
-            "Haxe",
-            "Java",
-            "JavaScript",
-            "Julia",
-            "Kotlin",
-            "Lisp",
-            "Lua",
-            "Matlab",
-            "MoonScript",
-            "Nim",
-            "OCaml",
-            "ObjectiveC",
-            "Octave",
-            "PHP",
-            "Pascal",
-            "Perl",
-            "Prolog",
-            "Python",
-            "Racket",
-            "Ruby",
-            "Rust",
-            "SML",
-            "SQL",
-            "Scala",
-            "Scheme",
-            "Swift",
-            "TypeScript",
-            "VisualBasic",
-            "XML",
-            "YAML",
-            "bc",
-            "dc",
-            "unknown"
-          ],
-          "title": "Code Language",
-          "type": "string"
+          "$ref": "#/$defs/CodeLanguageLabel",
+          "default": "unknown"
         }
       },
       "required": [
@@ -285,6 +225,70 @@
       "title": "CodeItem",
       "type": "object"
     },
+    "CodeLanguageLabel": {
+      "description": "CodeLanguageLabel.",
+      "enum": [
+        "Ada",
+        "Awk",
+        "Bash",
+        "C",
+        "C#",
+        "C++",
+        "CMake",
+        "COBOL",
+        "CSS",
+        "Ceylon",
+        "Clojure",
+        "Crystal",
+        "Cuda",
+        "Cython",
+        "D",
+        "Dart",
+        "Dockerfile",
+        "Elixir",
+        "Erlang",
+        "FORTRAN",
+        "Forth",
+        "Go",
+        "HTML",
+        "Haskell",
+        "Haxe",
+        "Java",
+        "JavaScript",
+        "Julia",
+        "Kotlin",
+        "Lisp",
+        "Lua",
+        "Matlab",
+        "MoonScript",
+        "Nim",
+        "OCaml",
+        "ObjectiveC",
+        "Octave",
+        "PHP",
+        "Pascal",
+        "Perl",
+        "Prolog",
+        "Python",
+        "Racket",
+        "Ruby",
+        "Rust",
+        "SML",
+        "SQL",
+        "Scala",
+        "Scheme",
+        "Swift",
+        "TypeScript",
+        "VisualBasic",
+        "XML",
+        "YAML",
+        "bc",
+        "dc",
+        "unknown"
+      ],
+      "title": "CodeLanguageLabel",
+      "type": "string"
+    },
     "CoordOrigin": {
       "description": "CoordOrigin.",
       "enum": [