diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs
index 75827f1c6a..0264c9e2bf 100644
--- a/crates/ruff_linter/src/codes.rs
+++ b/crates/ruff_linter/src/codes.rs
@@ -846,7 +846,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8PytestStyle, "025") => (RuleGroup::Stable, rules::flake8_pytest_style::rules::PytestErroneousUseFixturesOnFixture),
         (Flake8PytestStyle, "026") => (RuleGroup::Stable, rules::flake8_pytest_style::rules::PytestUseFixturesWithoutParameters),
         (Flake8PytestStyle, "027") => (RuleGroup::Stable, rules::flake8_pytest_style::rules::PytestUnittestRaisesAssertion),
-        (Flake8PytestStyle, "028") => (RuleGroup::Preview, rules::flake8_pytest_style::rules::PytestParameterWithDefaultArgument),
+        (Flake8PytestStyle, "028") => (RuleGroup::Stable, rules::flake8_pytest_style::rules::PytestParameterWithDefaultArgument),
         (Flake8PytestStyle, "029") => (RuleGroup::Preview, rules::flake8_pytest_style::rules::PytestWarnsWithoutWarning),
         (Flake8PytestStyle, "030") => (RuleGroup::Preview, rules::flake8_pytest_style::rules::PytestWarnsTooBroad),
         (Flake8PytestStyle, "031") => (RuleGroup::Preview, rules::flake8_pytest_style::rules::PytestWarnsWithMultipleStatements),