diff --git a/compiler/ir.py b/compiler/ir.py
index 9041cc1..beafd7c 100644
--- a/compiler/ir.py
+++ b/compiler/ir.py
@@ -3,11 +3,10 @@ from __future__ import annotations
 import abc
 from abc import abstractmethod
 
-from beartype import beartype
-
 from .errors import OverrideMandatoryError
 from .logger import Logger
 from .source import SourceLocation
+from .typechecking import typecheck
 
 logger = Logger(__name__)
 
@@ -39,7 +38,7 @@ class IRValue(IRItem, abc.ABC):
 
 class IRMove(IRAction):
 
-    @beartype
+    @typecheck
     def __init__(self, location: SourceLocation, dest: IRAssignable, source: IRValue):
         super().__init__(location)
         self.dest = dest
@@ -53,7 +52,7 @@ class IRMove(IRAction):
 
 
 class IRImmediate(IRValue):
-    @beartype
+    @typecheck
     def __init__(self, location: SourceLocation, value: int | float | str):
         super().__init__(location)
         self.value = value
@@ -89,7 +88,7 @@ class IRVariable(IRAssignable):
 
 class IRAdd(IRAction):
 
-    @beartype
+    @typecheck
     def __init__(self, location: SourceLocation, dest: IRAssignable, *values: IRValue):
         super().__init__(location)
         assert all(isinstance(v, IRValue) for v in values)
@@ -107,7 +106,7 @@ class IRAdd(IRAction):
 
 class IRMul(IRAction):
 
-    @beartype
+    @typecheck
     def __init__(self, location: SourceLocation, dest: IRAssignable, *values: IRValue):
         super().__init__(location)
         assert all(isinstance(v, IRValue) for v in values)
@@ -125,7 +124,7 @@ class IRMul(IRAction):
 
 class IRNegation(IRAction):
 
-    @beartype
+    @typecheck
     def __init__(self, location: SourceLocation, dest: IRAssignable, source: IRValue):
         super().__init__(location)
 
@@ -141,7 +140,7 @@ class IRNegation(IRAction):
 
 class IRInvert(IRAction):
 
-    @beartype
+    @typecheck
     def __init__(self, location: SourceLocation, dest: IRAssignable, source: IRValue):
         super().__init__(location)
 
diff --git a/compiler/lexer.py b/compiler/lexer.py
index 87fa1d3..55c67cc 100644
--- a/compiler/lexer.py
+++ b/compiler/lexer.py
@@ -5,21 +5,19 @@ import enum
 import re
 from dataclasses import dataclass, field
 
-from beartype import beartype
-from beartype.typing import Optional, List
-
 from .logger import Logger
 from .source import SourceLocation, Location
+from .typechecking import typecheck
 
 logger = Logger(__name__)
 
 
-@beartype
+@typecheck
 @dataclass
 class Token:
     kind: Tokens
     loc: SourceLocation = field(compare=False, hash=False, default=None)
-    value: Optional[str] = field(compare=False, hash=False, default=None)
+    value: str | None = field(compare=False, hash=False, default=None)
 
     def __repr__(self):
         return f"{self.kind.name}({repr(self.value)})"
@@ -78,7 +76,9 @@ class Lexer(collections.abc.Sequence):
         actual_result: Token
         if self.begin < len(self.data):
             best_result: Token = Token(Tokens.Unknown,
-                                       loc=SourceLocation(Location(line=self.line, character=self.character), source=self.data),
+                                       loc=SourceLocation(
+                                           Location(line=self.line, character=self.character),
+                                           source=self.data),
                                        value=""
                                        )
             for token_kind in list(Tokens):
diff --git a/compiler/nodes.py b/compiler/nodes.py
index 090cecf..38614c1 100644
--- a/compiler/nodes.py
+++ b/compiler/nodes.py
@@ -4,12 +4,11 @@ import functools
 from abc import abstractmethod, ABC
 from typing import Any, Iterable
 
-from beartype import beartype
-
 from . import ir, semantic, lexer
 from .errors import SemanticAnalysisError, OverrideMandatoryError
 from .logger import Logger
 from .source import SourceLocation
+from .typechecking import typecheck
 
 logger = Logger(__name__)
 
@@ -54,7 +53,7 @@ class Node:
         vals = self._values()
         try:
             vals = (val for val in vals)
-        except TypeError as e:
+        except TypeError:
             vals = (vals,)
 
         result = [f"{self.__class__.__name__} {{"]
@@ -223,13 +222,13 @@ class Division(Node):
 BinaryOperation = Sum | Sub | Product | Division
 
 
-@beartype
+@typecheck
 class Float(Literal):
     def __init__(self, location: SourceLocation, value: float):
         super().__init__(location, value)
 
 
-@beartype
+@typecheck
 class Integer(Literal):
 
     def __init__(self, location: SourceLocation, value: int):
diff --git a/compiler/parser.py b/compiler/parser.py
index ccafa09..50907ec 100644
--- a/compiler/parser.py
+++ b/compiler/parser.py
@@ -1,19 +1,19 @@
 from __future__ import annotations
 
-from beartype.typing import List, Dict, Callable
+from typing import Callable
 
 from .errors import CompilationError, UnexpectedTokenError
+from .lexer import Tokens, Token
 from .logger import Logger, Tracer, LogLevel
 from .nodes import Float, Sum, Value, Product, Node, Division, Sub, Integer, Expression, Identifier, Assignment, \
     Variable, Statement, PseudoNode, Block
-from .lexer import Tokens, Token
 
 logger = Logger(__name__)
 tracer = Tracer(logger, level=LogLevel.Debug)
 
 
 class Parser:
-    def __init__(self, tokens: List[Token]):
+    def __init__(self, tokens: list[Token]):
         self.tokens = tokens
         self.pos = 0
         self._last_accepted_token: Tokens | None = None
@@ -92,7 +92,7 @@ class Parser:
             raise UnexpectedTokenError(self.token, "variable identifier")
 
     @tracer.trace_method
-    def binary_op(self, operand_func: Callable[[bool], Value], operators: Dict[Tokens, Value], mandatory: bool = True):
+    def binary_op(self, operand_func: Callable[[bool], Value], operators: dict[Tokens, Value], mandatory: bool = True):
         operand = operand_func(mandatory)
         if not operand and mandatory:
             raise UnexpectedTokenError(operand, "operand")
diff --git a/compiler/source.py b/compiler/source.py
index e302a55..a765a54 100644
--- a/compiler/source.py
+++ b/compiler/source.py
@@ -3,15 +3,13 @@ from __future__ import annotations
 import math
 from dataclasses import dataclass
 
-from beartype import beartype
-from beartype.typing import Optional
-
 from .logger import Logger
+from .typechecking import typecheck
 
 logger = Logger(__name__)
 
 
-@beartype
+@typecheck
 @dataclass
 class Location:
     line: int
@@ -21,7 +19,7 @@ class Location:
     def __str__(self) -> str:
         return f"{self.file}:{self.line}:{self.character}"
 
-    @beartype
+    @typecheck
     def __lt__(self, other: Location) -> bool:
         if self.file != other.file:
             logger.trace(f"{self} is not in the same file as {other}")
@@ -41,11 +39,11 @@ class Location:
 
         return False
 
-    @beartype
+    @typecheck
     def __ge__(self, other: Location) -> bool:
         return not self.__lt__(other)
 
-    @beartype
+    @typecheck
     def __eq__(self, other: Location) -> bool:
         return all((
             self.file == other.file,
@@ -54,9 +52,9 @@ class Location:
         ))
 
 
-@beartype
+@typecheck
 class SourceLocation:
-    def __init__(self, begin: Location, end: Optional[Location] = None, source: Optional[str] = None):
+    def __init__(self, begin: Location, end: Location | None = None, source: str | None = None):
         self.begin = begin
         self.end = end
         if self.end is None:
diff --git a/compiler/typechecking.py b/compiler/typechecking.py
new file mode 100644
index 0000000..26e207e
--- /dev/null
+++ b/compiler/typechecking.py
@@ -0,0 +1,18 @@
+from typing import Callable, TypeVar, ParamSpec
+
+T = TypeVar("T")
+P = ParamSpec("P")
+
+
+def _typecheck_stub(func: Callable[P, T]) -> Callable[P, T]:
+    return func
+
+
+typecheck: Callable[P, T] = _typecheck_stub
+
+try:
+    import beartype
+
+    typecheck = beartype.beartype
+except ImportError:
+    pass