diff --git a/crates/ruff/src/checkers/ast/mod.rs b/crates/ruff/src/checkers/ast/mod.rs
index aae885b88bc5e1..8939e879cba088 100644
--- a/crates/ruff/src/checkers/ast/mod.rs
+++ b/crates/ruff/src/checkers/ast/mod.rs
@@ -2147,16 +2147,18 @@ where
                 ]) {
                     if let Some(operator) = typing::to_pep604_operator(value, slice, &self.semantic)
                     {
-                        if self.enabled(Rule::FutureRewritableTypeAnnotation) {
-                            if self.settings.target_version < PythonVersion::Py310
-                                && self.settings.target_version >= PythonVersion::Py37
-                                && !self.semantic.future_annotations()
-                                && self.semantic.in_annotation()
-                                && !self.settings.pyupgrade.keep_runtime_typing
-                            {
-                                flake8_future_annotations::rules::future_rewritable_type_annotation(
-                                    self, value,
-                                );
+                        if !self.is_stub {
+                            if self.enabled(Rule::FutureRewritableTypeAnnotation) {
+                                if self.settings.target_version < PythonVersion::Py310
+                                    && self.settings.target_version >= PythonVersion::Py37
+                                    && !self.semantic.future_annotations()
+                                    && self.semantic.in_annotation()
+                                    && !self.settings.pyupgrade.keep_runtime_typing
+                                {
+                                    flake8_future_annotations::rules::future_rewritable_type_annotation(
+                                        self, value,
+                                    );
+                                }
                             }
                         }
                         if self.enabled(Rule::NonPEP604Annotation) {
@@ -2175,17 +2177,19 @@ where
                 }
 
                 // Ex) list[...]
-                if self.enabled(Rule::FutureRequiredTypeAnnotation) {
-                    if self.settings.target_version < PythonVersion::Py39
-                        && !self.semantic.future_annotations()
-                        && self.semantic.in_annotation()
-                        && typing::is_pep585_generic(value, &self.semantic)
-                    {
-                        flake8_future_annotations::rules::future_required_type_annotation(
-                            self,
-                            expr,
-                            flake8_future_annotations::rules::Reason::PEP585,
-                        );
+                if !self.is_stub {
+                    if self.enabled(Rule::FutureRequiredTypeAnnotation) {
+                        if self.settings.target_version < PythonVersion::Py39
+                            && !self.semantic.future_annotations()
+                            && self.semantic.in_annotation()
+                            && typing::is_pep585_generic(value, &self.semantic)
+                        {
+                            flake8_future_annotations::rules::future_required_type_annotation(
+                                self,
+                                expr,
+                                flake8_future_annotations::rules::Reason::PEP585,
+                            );
+                        }
                     }
                 }
 
@@ -2273,16 +2277,18 @@ where
                             if let Some(replacement) =
                                 typing::to_pep585_generic(expr, &self.semantic)
                             {
-                                if self.enabled(Rule::FutureRewritableTypeAnnotation) {
-                                    if self.settings.target_version < PythonVersion::Py39
-                                        && self.settings.target_version >= PythonVersion::Py37
-                                        && !self.semantic.future_annotations()
-                                        && self.semantic.in_annotation()
-                                        && !self.settings.pyupgrade.keep_runtime_typing
-                                    {
-                                        flake8_future_annotations::rules::future_rewritable_type_annotation(
-                                            self, expr,
-                                        );
+                                if !self.is_stub {
+                                    if self.enabled(Rule::FutureRewritableTypeAnnotation) {
+                                        if self.settings.target_version < PythonVersion::Py39
+                                            && self.settings.target_version >= PythonVersion::Py37
+                                            && !self.semantic.future_annotations()
+                                            && self.semantic.in_annotation()
+                                            && !self.settings.pyupgrade.keep_runtime_typing
+                                        {
+                                            flake8_future_annotations::rules::future_rewritable_type_annotation(
+                                                self, expr,
+                                            );
+                                        }
                                     }
                                 }
                                 if self.enabled(Rule::NonPEP585Annotation) {
@@ -2350,16 +2356,18 @@ where
                     Rule::NonPEP585Annotation,
                 ]) {
                     if let Some(replacement) = typing::to_pep585_generic(expr, &self.semantic) {
-                        if self.enabled(Rule::FutureRewritableTypeAnnotation) {
-                            if self.settings.target_version < PythonVersion::Py39
-                                && self.settings.target_version >= PythonVersion::Py37
-                                && !self.semantic.future_annotations()
-                                && self.semantic.in_annotation()
-                                && !self.settings.pyupgrade.keep_runtime_typing
-                            {
-                                flake8_future_annotations::rules::future_rewritable_type_annotation(
-                                    self, expr,
-                                );
+                        if !self.is_stub {
+                            if self.enabled(Rule::FutureRewritableTypeAnnotation) {
+                                if self.settings.target_version < PythonVersion::Py39
+                                    && self.settings.target_version >= PythonVersion::Py37
+                                    && !self.semantic.future_annotations()
+                                    && self.semantic.in_annotation()
+                                    && !self.settings.pyupgrade.keep_runtime_typing
+                                {
+                                    flake8_future_annotations::rules::future_rewritable_type_annotation(
+                                        self, expr,
+                                    );
+                                }
                             }
                         }
                         if self.enabled(Rule::NonPEP585Annotation) {
@@ -3142,16 +3150,18 @@ where
                 ..
             }) => {
                 // Ex) `str | None`
-                if self.enabled(Rule::FutureRequiredTypeAnnotation) {
-                    if self.settings.target_version < PythonVersion::Py310
-                        && !self.semantic.future_annotations()
-                        && self.semantic.in_annotation()
-                    {
-                        flake8_future_annotations::rules::future_required_type_annotation(
-                            self,
-                            expr,
-                            flake8_future_annotations::rules::Reason::PEP604,
-                        );
+                if !self.is_stub {
+                    if self.enabled(Rule::FutureRequiredTypeAnnotation) {
+                        if self.settings.target_version < PythonVersion::Py310
+                            && !self.semantic.future_annotations()
+                            && self.semantic.in_annotation()
+                        {
+                            flake8_future_annotations::rules::future_required_type_annotation(
+                                self,
+                                expr,
+                                flake8_future_annotations::rules::Reason::PEP604,
+                            );
+                        }
                     }
                 }