diff --git a/pyproject.toml b/pyproject.toml
index 0457275b8..9316c6f18 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -125,14 +125,6 @@ lint.ignore = [
   "S101",   # Use of assert detected https://docs.astral.sh/ruff/rules/assert/
   "SIM102", # sometimes it's better to nest
   "TRY003", # Avoid specifying long messages outside the exception class
-  # Checks for uses of isinstance/issubclass that take a tuple of types for comparison.
-  # Deactivated because it can make the code slow: https://github.com/astral-sh/ruff/issues/7871
-  "UP038",
-]
-# The fixes in extend-unsafe-fixes will require
-# provide the `--unsafe-fixes` flag when fixing.
-lint.extend-unsafe-fixes = [
-  "UP038",
 ]
 lint.isort.force-single-line = true
 
diff --git a/{{cookiecutter.project_slug}}/pyproject.toml b/{{cookiecutter.project_slug}}/pyproject.toml
index 0147262bf..e523b4ca4 100644
--- a/{{cookiecutter.project_slug}}/pyproject.toml
+++ b/{{cookiecutter.project_slug}}/pyproject.toml
@@ -127,16 +127,10 @@ ignore = [
     "S101", # Use of assert detected https://docs.astral.sh/ruff/rules/assert/
     "RUF012", # Mutable class attributes should be annotated with `typing.ClassVar`
     "SIM102", # sometimes it's better to nest
-    "UP038", # Checks for uses of isinstance/issubclass that take a tuple
     # of types for comparison.
     # Deactivated because it can make the code slow:
     # https://github.com/astral-sh/ruff/issues/7871
 ]
-# The fixes in extend-unsafe-fixes will require
-# provide the `--unsafe-fixes` flag when fixing.
-extend-unsafe-fixes = [
-  "UP038",
-]
 
 [tool.ruff.lint.isort]
 force-single-line = true