diff --git a/.github/workflows/autofix.yml b/.github/workflows/autofix.yml
index 369986db6..5844aedbb 100644
--- a/.github/workflows/autofix.yml
+++ b/.github/workflows/autofix.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           python-version-file: .github/python-version.txt
       - run: pip install -e .[dev]
-      - run: ruff --fix-only .
+      - run: ruff check --fix-only .
       - run: ruff format .
 
       - run: web/gen/all
diff --git a/mitmproxy/optmanager.py b/mitmproxy/optmanager.py
index 3dbc215c5..c77b3945f 100644
--- a/mitmproxy/optmanager.py
+++ b/mitmproxy/optmanager.py
@@ -267,7 +267,7 @@ class OptManager:
         if attr not in self._options:
             raise KeyError("No such option: %s" % attr)
         o = self._options[attr]
-        if o.typespec != bool:
+        if o.typespec is not bool:
             raise ValueError("Toggler can only be used with boolean options")
 
         def toggle():
@@ -379,7 +379,7 @@ class OptManager:
             optstr = None
 
         if o.typespec in (str, Optional[str]):
-            if o.typespec == str and optstr is None:
+            if o.typespec is str and optstr is None:
                 raise exceptions.OptionsError(f"Option is required: {o.name}")
             return optstr
         elif o.typespec in (int, Optional[int]):
@@ -388,11 +388,11 @@ class OptManager:
                     return int(optstr)
                 except ValueError:
                     raise exceptions.OptionsError(f"Not an integer: {optstr}")
-            elif o.typespec == int:
+            elif o.typespec is int:
                 raise exceptions.OptionsError(f"Option is required: {o.name}")
             else:
                 return None
-        elif o.typespec == bool:
+        elif o.typespec is bool:
             if optstr == "toggle":
                 return not o.current()
             if not optstr or optstr == "true":
@@ -424,7 +424,7 @@ class OptManager:
 
         flags = mkf(optname, short)
 
-        if o.typespec == bool:
+        if o.typespec is bool:
             g = parser.add_mutually_exclusive_group(required=False)
             onf = mkf(optname, None)
             offf = mkf("no-" + optname, None)
diff --git a/mitmproxy/tools/console/options.py b/mitmproxy/tools/console/options.py
index 8aca078ba..5b70fba11 100644
--- a/mitmproxy/tools/console/options.py
+++ b/mitmproxy/tools/console/options.py
@@ -38,7 +38,7 @@ class OptionItem(urwid.WidgetWrap):
 
     def get_widget(self):
         val = self.opt.current()
-        if self.opt.typespec == bool:
+        if self.opt.typespec is bool:
             displayval = "true" if val else "false"
         elif not val:
             displayval = ""
@@ -190,7 +190,7 @@ class OptionsList(urwid.ListBox):
                 self.walker._modified()
             elif key == "m_select":
                 foc, idx = self.get_focus()
-                if foc.opt.typespec == bool:
+                if foc.opt.typespec is bool:
                     self.master.options.toggler(foc.opt.name)()
                     # Bust the focus widget cache
                     self.set_focus(self.walker.index)
diff --git a/pyproject.toml b/pyproject.toml
index e8fc163f7..c86752863 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,7 +76,7 @@ dev = [
     "wheel>=0.36.2,<=0.43",
     "build>=0.10.0,<=1.2.1",
     "mypy<=1.10.1,>=1.10.1",
-    "ruff>=0.4.1,<=0.4.7",
+    "ruff<=0.5.0,>=0.5.0",
     "types-certifi>=2021.10.8.3,<=2021.10.8.3",
     "types-Flask>=1.1.6,<=1.1.6",
     "types-Werkzeug>=1.0.9,<=1.0.9",
@@ -299,7 +299,7 @@ uv_resolution = lowest-direct
 
 [testenv:lint]
 commands =
-  ruff .
+  ruff check .
 
 [testenv:filename_matching]
 deps =
diff --git a/web/gen/options_js.py b/web/gen/options_js.py
index d9ea7c66c..2bd1ddbc3 100755
--- a/web/gen/options_js.py
+++ b/web/gen/options_js.py
@@ -17,11 +17,11 @@ filename = here / "../src/js/ducks/_options_gen.ts"
 
 
 def _ts_type(t):
-    if t == bool:
+    if t is bool:
         return "boolean"
-    if t == str:
+    if t is str:
         return "string"
-    if t == int:
+    if t is int:
         return "number"
     if t == Sequence[str]:
         return "string[]"