diff --git a/pyproject.toml b/pyproject.toml
index 4ae195ac73..902fffdc9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -98,10 +98,7 @@ show_contexts = true
 
 [tool.mypy]
 strict = true
-
-[[tool.mypy.overrides]]
-module = "sqlmodel.sql._expression_select_gen"
-warn_unused_ignores = false
+exclude = "sqlmodel.sql._expression_select_gen"
 
 [[tool.mypy.overrides]]
 module = "docs_src.*"
diff --git a/requirements-tests.txt b/requirements-tests.txt
index f6e826511d..6cae1015c9 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -2,7 +2,9 @@
 -r requirements-docs-tests.txt
 pytest >=7.0.1,<9.0.0
 coverage[toml] >=6.2,<8.0
-mypy ==1.4.1
+# Remove when support for Python 3.8 is dropped
+mypy ==1.14.1; python_version < "3.9"
+mypy ==1.18.2; python_version >= "3.9"
 ruff ==0.13.2
 # For FastAPI tests
 fastapi >=0.103.2
diff --git a/sqlmodel/_compat.py b/sqlmodel/_compat.py
index 38dd501c4a..dc806d381b 100644
--- a/sqlmodel/_compat.py
+++ b/sqlmodel/_compat.py
@@ -123,7 +123,7 @@ def init_pydantic_private_attrs(new_object: InstanceOrType["SQLModel"]) -> None:
         object.__setattr__(new_object, "__pydantic_private__", None)
 
     def get_annotations(class_dict: Dict[str, Any]) -> Dict[str, Any]:
-        return class_dict.get("__annotations__", {})
+        return class_dict.get("__annotations__", {})  # type: ignore[no-any-return]
 
     def is_table_model_class(cls: Type[Any]) -> bool:
         config = getattr(cls, "model_config", {})
@@ -180,7 +180,7 @@ def is_field_noneable(field: "FieldInfo") -> bool:
         if not field.is_required():
             if field.default is Undefined:
                 return False
-            if field.annotation is None or field.annotation is NoneType:  # type: ignore[comparison-overlap]
+            if field.annotation is None or field.annotation is NoneType:
                 return True
             return False
         return False
@@ -509,7 +509,7 @@ def _calculate_keys(
             keys -= update.keys()
 
         if exclude:
-            keys -= {k for k, v in exclude.items() if ValueItems.is_true(v)}
+            keys -= {str(k) for k, v in exclude.items() if ValueItems.is_true(v)}
 
         return keys
 
diff --git a/sqlmodel/main.py b/sqlmodel/main.py
index 38c85915aa..f4ee067ec4 100644
--- a/sqlmodel/main.py
+++ b/sqlmodel/main.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import ipaddress
 import uuid
 import weakref
@@ -600,7 +602,7 @@ def __init__(
                     setattr(cls, rel_name, rel_info.sa_relationship)  # Fix #315
                     continue
                 raw_ann = cls.__annotations__[rel_name]
-                origin = get_origin(raw_ann)
+                origin: Any = get_origin(raw_ann)
                 if origin is Mapped:
                     ann = raw_ann.__args__[0]
                 else: