diff --git a/stdlib/lib2to3/fixes/fix_asserts.pyi b/stdlib/lib2to3/fixes/fix_asserts.pyi
index fb0b472aa..1bf7db2f7 100644
--- a/stdlib/lib2to3/fixes/fix_asserts.pyi
+++ b/stdlib/lib2to3/fixes/fix_asserts.pyi
@@ -1,8 +1,8 @@
-from typing import ClassVar, Literal
+from typing import ClassVar, Final, Literal
 
 from ..fixer_base import BaseFix
 
-NAMES: dict[str, str]
+NAMES: Final[dict[str, str]]
 
 class FixAsserts(BaseFix):
     BM_compatible: ClassVar[Literal[False]]
diff --git a/stdlib/lib2to3/fixes/fix_idioms.pyi b/stdlib/lib2to3/fixes/fix_idioms.pyi
index 4595c57c7..6b2723d09 100644
--- a/stdlib/lib2to3/fixes/fix_idioms.pyi
+++ b/stdlib/lib2to3/fixes/fix_idioms.pyi
@@ -1,9 +1,9 @@
-from typing import ClassVar, Literal
+from typing import ClassVar, Final, Literal
 
 from .. import fixer_base
 
-CMP: str
-TYPE: str
+CMP: Final[str]
+TYPE: Final[str]
 
 class FixIdioms(fixer_base.BaseFix):
     BM_compatible: ClassVar[Literal[False]]
diff --git a/stdlib/lib2to3/fixes/fix_imports.pyi b/stdlib/lib2to3/fixes/fix_imports.pyi
index dd6f72dd8..c747af529 100644
--- a/stdlib/lib2to3/fixes/fix_imports.pyi
+++ b/stdlib/lib2to3/fixes/fix_imports.pyi
@@ -1,11 +1,11 @@
 from _typeshed import StrPath
 from collections.abc import Generator
-from typing import ClassVar, Literal
+from typing import ClassVar, Final, Literal
 
 from .. import fixer_base
 from ..pytree import Node
 
-MAPPING: dict[str, str]
+MAPPING: Final[dict[str, str]]
 
 def alternates(members): ...
 def build_pattern(mapping=...) -> Generator[str, None, None]: ...
diff --git a/stdlib/lib2to3/fixes/fix_imports2.pyi b/stdlib/lib2to3/fixes/fix_imports2.pyi
index 8d5543308..618ecd042 100644
--- a/stdlib/lib2to3/fixes/fix_imports2.pyi
+++ b/stdlib/lib2to3/fixes/fix_imports2.pyi
@@ -1,6 +1,8 @@
+from typing import Final
+
 from . import fix_imports
 
-MAPPING: dict[str, str]
+MAPPING: Final[dict[str, str]]
 
 class FixImports2(fix_imports.FixImports):
     mapping = MAPPING
diff --git a/stdlib/lib2to3/fixes/fix_methodattrs.pyi b/stdlib/lib2to3/fixes/fix_methodattrs.pyi
index 594b5e2c9..ca9b71e43 100644
--- a/stdlib/lib2to3/fixes/fix_methodattrs.pyi
+++ b/stdlib/lib2to3/fixes/fix_methodattrs.pyi
@@ -1,8 +1,8 @@
-from typing import ClassVar, Literal
+from typing import ClassVar, Final, Literal
 
 from .. import fixer_base
 
-MAP: dict[str, str]
+MAP: Final[dict[str, str]]
 
 class FixMethodattrs(fixer_base.BaseFix):
     BM_compatible: ClassVar[Literal[True]]
diff --git a/stdlib/lib2to3/fixes/fix_renames.pyi b/stdlib/lib2to3/fixes/fix_renames.pyi
index 6283f1ab7..652d8f15e 100644
--- a/stdlib/lib2to3/fixes/fix_renames.pyi
+++ b/stdlib/lib2to3/fixes/fix_renames.pyi
@@ -1,10 +1,10 @@
 from collections.abc import Generator
-from typing import ClassVar, Literal
+from typing import ClassVar, Final, Literal
 
 from .. import fixer_base
 
-MAPPING: dict[str, dict[str, str]]
-LOOKUP: dict[tuple[str, str], str]
+MAPPING: Final[dict[str, dict[str, str]]]
+LOOKUP: Final[dict[tuple[str, str], str]]
 
 def alternates(members): ...
 def build_pattern() -> Generator[str, None, None]: ...
diff --git a/stdlib/lib2to3/fixes/fix_urllib.pyi b/stdlib/lib2to3/fixes/fix_urllib.pyi
index 625472f60..abdcc0f62 100644
--- a/stdlib/lib2to3/fixes/fix_urllib.pyi
+++ b/stdlib/lib2to3/fixes/fix_urllib.pyi
@@ -1,9 +1,9 @@
 from collections.abc import Generator
-from typing import Literal
+from typing import Final, Literal
 
 from .fix_imports import FixImports
 
-MAPPING: dict[str, list[tuple[Literal["urllib.request", "urllib.parse", "urllib.error"], list[str]]]]
+MAPPING: Final[dict[str, list[tuple[Literal["urllib.request", "urllib.parse", "urllib.error"], list[str]]]]]
 
 def build_pattern() -> Generator[str, None, None]: ...
 
diff --git a/stdlib/lib2to3/pgen2/token.pyi b/stdlib/lib2to3/pgen2/token.pyi
index debcb2193..6898517ac 100644
--- a/stdlib/lib2to3/pgen2/token.pyi
+++ b/stdlib/lib2to3/pgen2/token.pyi
@@ -1,65 +1,67 @@
-ENDMARKER: int
-NAME: int
-NUMBER: int
-STRING: int
-NEWLINE: int
-INDENT: int
-DEDENT: int
-LPAR: int
-RPAR: int
-LSQB: int
-RSQB: int
-COLON: int
-COMMA: int
-SEMI: int
-PLUS: int
-MINUS: int
-STAR: int
-SLASH: int
-VBAR: int
-AMPER: int
-LESS: int
-GREATER: int
-EQUAL: int
-DOT: int
-PERCENT: int
-BACKQUOTE: int
-LBRACE: int
-RBRACE: int
-EQEQUAL: int
-NOTEQUAL: int
-LESSEQUAL: int
-GREATEREQUAL: int
-TILDE: int
-CIRCUMFLEX: int
-LEFTSHIFT: int
-RIGHTSHIFT: int
-DOUBLESTAR: int
-PLUSEQUAL: int
-MINEQUAL: int
-STAREQUAL: int
-SLASHEQUAL: int
-PERCENTEQUAL: int
-AMPEREQUAL: int
-VBAREQUAL: int
-CIRCUMFLEXEQUAL: int
-LEFTSHIFTEQUAL: int
-RIGHTSHIFTEQUAL: int
-DOUBLESTAREQUAL: int
-DOUBLESLASH: int
-DOUBLESLASHEQUAL: int
-OP: int
-COMMENT: int
-NL: int
-RARROW: int
-AT: int
-ATEQUAL: int
-AWAIT: int
-ASYNC: int
-ERRORTOKEN: int
-COLONEQUAL: int
-N_TOKENS: int
-NT_OFFSET: int
+from typing import Final
+
+ENDMARKER: Final[int]
+NAME: Final[int]
+NUMBER: Final[int]
+STRING: Final[int]
+NEWLINE: Final[int]
+INDENT: Final[int]
+DEDENT: Final[int]
+LPAR: Final[int]
+RPAR: Final[int]
+LSQB: Final[int]
+RSQB: Final[int]
+COLON: Final[int]
+COMMA: Final[int]
+SEMI: Final[int]
+PLUS: Final[int]
+MINUS: Final[int]
+STAR: Final[int]
+SLASH: Final[int]
+VBAR: Final[int]
+AMPER: Final[int]
+LESS: Final[int]
+GREATER: Final[int]
+EQUAL: Final[int]
+DOT: Final[int]
+PERCENT: Final[int]
+BACKQUOTE: Final[int]
+LBRACE: Final[int]
+RBRACE: Final[int]
+EQEQUAL: Final[int]
+NOTEQUAL: Final[int]
+LESSEQUAL: Final[int]
+GREATEREQUAL: Final[int]
+TILDE: Final[int]
+CIRCUMFLEX: Final[int]
+LEFTSHIFT: Final[int]
+RIGHTSHIFT: Final[int]
+DOUBLESTAR: Final[int]
+PLUSEQUAL: Final[int]
+MINEQUAL: Final[int]
+STAREQUAL: Final[int]
+SLASHEQUAL: Final[int]
+PERCENTEQUAL: Final[int]
+AMPEREQUAL: Final[int]
+VBAREQUAL: Final[int]
+CIRCUMFLEXEQUAL: Final[int]
+LEFTSHIFTEQUAL: Final[int]
+RIGHTSHIFTEQUAL: Final[int]
+DOUBLESTAREQUAL: Final[int]
+DOUBLESLASH: Final[int]
+DOUBLESLASHEQUAL: Final[int]
+OP: Final[int]
+COMMENT: Final[int]
+NL: Final[int]
+RARROW: Final[int]
+AT: Final[int]
+ATEQUAL: Final[int]
+AWAIT: Final[int]
+ASYNC: Final[int]
+ERRORTOKEN: Final[int]
+COLONEQUAL: Final[int]
+N_TOKENS: Final[int]
+NT_OFFSET: Final[int]
 tok_name: dict[int, str]
 
 def ISTERMINAL(x: int) -> bool: ...