diff --git a/crates/ruff/resources/test/fixtures/flake8_pyi/PYI011.pyi b/crates/ruff/resources/test/fixtures/flake8_pyi/PYI011.pyi
index 8678a0958a..1a3c7b3c61 100644
--- a/crates/ruff/resources/test/fixtures/flake8_pyi/PYI011.pyi
+++ b/crates/ruff/resources/test/fixtures/flake8_pyi/PYI011.pyi
@@ -1,3 +1,10 @@
+import math
+import os
+import sys
+from math import inf
+
+import numpy as np
+
 def f12(
     x,
     y: str = os.pathsep,  # Error PYI011 Only simple default values allowed for typed arguments
@@ -101,3 +108,9 @@ def f35(
     x: complex = math.inf  # Error PYI011 Only simple default values allowed for typed arguments
     + 1j,
 ) -> None: ...
+def f36(
+    *, x: str = sys.version,  # OK
+) -> None: ...
+def f37(
+    *, x: str = "" + "",  # Error PYI011 Only simple default values allowed for typed arguments
+) -> None: ...
diff --git a/crates/ruff/src/rules/flake8_pyi/rules/simple_defaults.rs b/crates/ruff/src/rules/flake8_pyi/rules/simple_defaults.rs
index 8bafc22bdb..ba4ef5b062 100644
--- a/crates/ruff/src/rules/flake8_pyi/rules/simple_defaults.rs
+++ b/crates/ruff/src/rules/flake8_pyi/rules/simple_defaults.rs
@@ -1,20 +1,25 @@
 use rustpython_parser::ast::{Arguments, Constant, Expr, ExprKind, Operator, Unaryop};
 
-use ruff_diagnostics::{Diagnostic, Violation};
+use ruff_diagnostics::{AlwaysAutofixableViolation, Diagnostic, Fix, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::types::Range;
 
 use crate::checkers::ast::Checker;
+use crate::registry::AsRule;
 
 #[violation]
 pub struct TypedArgumentSimpleDefaults;
 
 /// PYI011
-impl Violation for TypedArgumentSimpleDefaults {
+impl AlwaysAutofixableViolation for TypedArgumentSimpleDefaults {
     #[derive_message_formats]
     fn message(&self) -> String {
         format!("Only simple default values allowed for typed arguments")
     }
+
+    fn autofix_title(&self) -> String {
+        "Replace default value by `...`".to_string()
+    }
 }
 
 #[violation]
@@ -111,7 +116,7 @@ fn is_valid_default_value_with_annotation(default: &Expr, checker: &Checker) ->
             if let ExprKind::Attribute { .. } = &operand.node {
                 if checker
                     .ctx
-                    .resolve_call_path(default)
+                    .resolve_call_path(operand)
                     .map_or(false, |call_path| {
                         ALLOWED_MATH_ATTRIBUTES_IN_DEFAULTS.iter().any(|target| {
                             // reject `-math.nan`
@@ -188,10 +193,18 @@ pub fn typed_argument_simple_defaults(checker: &mut Checker, args: &Arguments) {
             {
                 if arg.node.annotation.is_some() {
                     if !is_valid_default_value_with_annotation(default, checker) {
-                        checker.diagnostics.push(Diagnostic::new(
-                            TypedArgumentSimpleDefaults,
-                            Range::from(default),
-                        ));
+                        let mut diagnostic =
+                            Diagnostic::new(TypedArgumentSimpleDefaults, Range::from(default));
+
+                        if checker.patch(diagnostic.kind.rule()) {
+                            diagnostic.amend(Fix::replacement(
+                                "...".to_string(),
+                                default.location,
+                                default.end_location.unwrap(),
+                            ));
+                        }
+
+                        checker.diagnostics.push(diagnostic);
                     }
                 }
             }
@@ -207,10 +220,18 @@ pub fn typed_argument_simple_defaults(checker: &mut Checker, args: &Arguments) {
             {
                 if kwarg.node.annotation.is_some() {
                     if !is_valid_default_value_with_annotation(default, checker) {
-                        checker.diagnostics.push(Diagnostic::new(
-                            TypedArgumentSimpleDefaults,
-                            Range::from(default),
-                        ));
+                        let mut diagnostic =
+                            Diagnostic::new(TypedArgumentSimpleDefaults, Range::from(default));
+
+                        if checker.patch(diagnostic.kind.rule()) {
+                            diagnostic.amend(Fix::replacement(
+                                "...".to_string(),
+                                default.location,
+                                default.end_location.unwrap(),
+                            ));
+                        }
+
+                        checker.diagnostics.push(diagnostic);
                     }
                 }
             }
diff --git a/crates/ruff/src/rules/flake8_pyi/snapshots/ruff__rules__flake8_pyi__tests__PYI011_PYI011.pyi.snap b/crates/ruff/src/rules/flake8_pyi/snapshots/ruff__rules__flake8_pyi__tests__PYI011_PYI011.pyi.snap
index 484cf00790..81f1c12f5a 100644
--- a/crates/ruff/src/rules/flake8_pyi/snapshots/ruff__rules__flake8_pyi__tests__PYI011_PYI011.pyi.snap
+++ b/crates/ruff/src/rules/flake8_pyi/snapshots/ruff__rules__flake8_pyi__tests__PYI011_PYI011.pyi.snap
@@ -5,248 +5,321 @@ expression: diagnostics
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
-    row: 3
+    row: 10
     column: 13
   end_location:
-    row: 3
+    row: 10
     column: 23
-  fix: ~
+  fix:
+    content: "..."
+    location:
+      row: 10
+      column: 13
+    end_location:
+      row: 10
+      column: 23
   parent: ~
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
-    row: 9
+    row: 16
     column: 8
   end_location:
-    row: 13
+    row: 20
     column: 5
-  fix: ~
+  fix:
+    content: "..."
+    location:
+      row: 16
+      column: 8
+    end_location:
+      row: 20
+      column: 5
   parent: ~
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
-    row: 18
+    row: 25
     column: 8
   end_location:
-    row: 22
+    row: 29
     column: 5
-  fix: ~
+  fix:
+    content: "..."
+    location:
+      row: 25
+      column: 8
+    end_location:
+      row: 29
+      column: 5
   parent: ~
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
-    row: 27
-    column: 8
-  end_location:
-    row: 31
-    column: 5
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 36
+    row: 34
     column: 8
   end_location:
     row: 38
     column: 5
-  fix: ~
+  fix:
+    content: "..."
+    location:
+      row: 34
+      column: 8
+    end_location:
+      row: 38
+      column: 5
   parent: ~
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
-    row: 41
-    column: 13
+    row: 43
+    column: 8
   end_location:
-    row: 42
-    column: 11
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
     row: 45
-    column: 13
-  end_location:
-    row: 46
-    column: 12
-  fix: ~
+    column: 5
+  fix:
+    content: "..."
+    location:
+      row: 43
+      column: 8
+    end_location:
+      row: 45
+      column: 5
   parent: ~
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
+    row: 48
+    column: 13
+  end_location:
     row: 49
+    column: 11
+  fix:
+    content: "..."
+    location:
+      row: 48
+      column: 13
+    end_location:
+      row: 49
+      column: 11
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 52
+    column: 13
+  end_location:
+    row: 53
+    column: 12
+  fix:
+    content: "..."
+    location:
+      row: 52
+      column: 13
+    end_location:
+      row: 53
+      column: 12
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 56
     column: 16
   end_location:
-    row: 50
+    row: 57
     column: 7
-  fix: ~
+  fix:
+    content: "..."
+    location:
+      row: 56
+      column: 16
+    end_location:
+      row: 57
+      column: 7
   parent: ~
 - kind:
     name: TypedArgumentSimpleDefaults
     body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
+    suggestion: "Replace default value by `...`"
+    fixable: true
   location:
-    row: 53
+    row: 60
     column: 13
   end_location:
-    row: 54
-    column: 7
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 57
-    column: 17
-  end_location:
-    row: 58
-    column: 8
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
     row: 61
+    column: 7
+  fix:
+    content: "..."
+    location:
+      row: 60
+      column: 13
+    end_location:
+      row: 61
+      column: 7
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 64
     column: 17
   end_location:
-    row: 62
-    column: 10
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 80
-    column: 15
-  end_location:
-    row: 80
-    column: 23
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 83
-    column: 15
-  end_location:
-    row: 83
-    column: 23
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 86
-    column: 15
-  end_location:
-    row: 86
-    column: 24
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 89
-    column: 15
-  end_location:
-    row: 89
-    column: 18
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 92
-    column: 15
-  end_location:
-    row: 92
-    column: 21
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 95
-    column: 15
-  end_location:
-    row: 95
-    column: 23
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 98
-    column: 15
-  end_location:
-    row: 98
-    column: 24
-  fix: ~
-  parent: ~
-- kind:
-    name: TypedArgumentSimpleDefaults
-    body: Only simple default values allowed for typed arguments
-    suggestion: ~
-    fixable: false
-  location:
-    row: 101
-    column: 17
-  end_location:
-    row: 102
+    row: 65
     column: 8
-  fix: ~
+  fix:
+    content: "..."
+    location:
+      row: 64
+      column: 17
+    end_location:
+      row: 65
+      column: 8
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 68
+    column: 17
+  end_location:
+    row: 69
+    column: 10
+  fix:
+    content: "..."
+    location:
+      row: 68
+      column: 17
+    end_location:
+      row: 69
+      column: 10
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 96
+    column: 15
+  end_location:
+    row: 96
+    column: 18
+  fix:
+    content: "..."
+    location:
+      row: 96
+      column: 15
+    end_location:
+      row: 96
+      column: 18
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 99
+    column: 15
+  end_location:
+    row: 99
+    column: 21
+  fix:
+    content: "..."
+    location:
+      row: 99
+      column: 15
+    end_location:
+      row: 99
+      column: 21
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 105
+    column: 15
+  end_location:
+    row: 105
+    column: 24
+  fix:
+    content: "..."
+    location:
+      row: 105
+      column: 15
+    end_location:
+      row: 105
+      column: 24
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 108
+    column: 17
+  end_location:
+    row: 109
+    column: 8
+  fix:
+    content: "..."
+    location:
+      row: 108
+      column: 17
+    end_location:
+      row: 109
+      column: 8
+  parent: ~
+- kind:
+    name: TypedArgumentSimpleDefaults
+    body: Only simple default values allowed for typed arguments
+    suggestion: "Replace default value by `...`"
+    fixable: true
+  location:
+    row: 115
+    column: 16
+  end_location:
+    row: 115
+    column: 23
+  fix:
+    content: "..."
+    location:
+      row: 115
+      column: 16
+    end_location:
+      row: 115
+      column: 23
   parent: ~