diff --git a/crates/ruff_linter/resources/test/fixtures/ruff/RUF026.py b/crates/ruff_linter/resources/test/fixtures/ruff/RUF026.py
index 8d593481e7be4..c607b8b1b3dec 100644
--- a/crates/ruff_linter/resources/test/fixtures/ruff/RUF026.py
+++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF026.py
@@ -110,7 +110,7 @@ def func():
 
 
 def func():
-    defaultdict(dict, defaultdict=list)  # OK
+    defaultdict(dict, default_factory=list)  # OK
 
 
 def func():
diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs
index 781b48240b9f2..6871716ec8ca9 100644
--- a/crates/ruff_linter/src/codes.rs
+++ b/crates/ruff_linter/src/codes.rs
@@ -930,9 +930,9 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Ruff, "021") => (RuleGroup::Preview, rules::ruff::rules::ParenthesizeChainedOperators),
         (Ruff, "022") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderAll),
         (Ruff, "023") => (RuleGroup::Preview, rules::ruff::rules::UnsortedDunderSlots),
-        (Ruff, "024") => (RuleGroup::Preview, rules::ruff::rules::MutableFromkeysValue),
+        (Ruff, "024") => (RuleGroup::Stable, rules::ruff::rules::MutableFromkeysValue),
         (Ruff, "025") => (RuleGroup::Preview, rules::ruff::rules::UnnecessaryDictComprehensionForIterable),
-        (Ruff, "026") => (RuleGroup::Preview, rules::ruff::rules::DefaultFactoryKwarg),
+        (Ruff, "026") => (RuleGroup::Stable, rules::ruff::rules::DefaultFactoryKwarg),
         (Ruff, "027") => (RuleGroup::Preview, rules::ruff::rules::MissingFStringSyntax),
         (Ruff, "028") => (RuleGroup::Preview, rules::ruff::rules::InvalidFormatterSuppressionComment),
         (Ruff, "029") => (RuleGroup::Preview, rules::ruff::rules::UnusedAsync),