diff --git a/Lib/_pyrepl/base_eventqueue.py b/Lib/_pyrepl/base_eventqueue.py
index 842599bd1877fb..0589a0f437ec7c 100644
--- a/Lib/_pyrepl/base_eventqueue.py
+++ b/Lib/_pyrepl/base_eventqueue.py
@@ -87,7 +87,7 @@ def push(self, char: int | bytes) -> None:
             if isinstance(k, dict):
                 self.keymap = k
             else:
-                self.insert(Event('key', k, self.flush_buf()))
+                self.insert(Event('key', k, bytes(self.flush_buf())))
                 self.keymap = self.compiled_keymap
 
         elif self.buf and self.buf[0] == 27:  # escape
@@ -96,7 +96,7 @@ def push(self, char: int | bytes) -> None:
             # the docstring in keymap.py
             trace('unrecognized escape sequence, propagating...')
             self.keymap = self.compiled_keymap
-            self.insert(Event('key', '\033', bytearray(b'\033')))
+            self.insert(Event('key', '\033', b'\033'))
             for _c in self.flush_buf()[1:]:
                 self.push(_c)
 
@@ -106,5 +106,5 @@ def push(self, char: int | bytes) -> None:
             except UnicodeError:
                 return
             else:
-                self.insert(Event('key', decoded, self.flush_buf()))
+                self.insert(Event('key', decoded, bytes(self.flush_buf())))
             self.keymap = self.compiled_keymap
diff --git a/Tools/cases_generator/tier2_generator.py b/Tools/cases_generator/tier2_generator.py
index 276f306dfffa18..fc3bc47286f7f6 100644
--- a/Tools/cases_generator/tier2_generator.py
+++ b/Tools/cases_generator/tier2_generator.py
@@ -91,7 +91,7 @@ def deopt_if(
         self.emit("}\n")
         return not always_true(first_tkn)
 
-    def exit_if(  # type: ignore[override]
+    def exit_if(
         self,
         tkn: Token,
         tkn_iter: TokenIterator,
diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
index 5bf180bb30a310..0beaab2d3e7157 100644
--- a/Tools/requirements-dev.txt
+++ b/Tools/requirements-dev.txt
@@ -1,7 +1,7 @@
 # Requirements file for external linters and checks we run on
 # Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
-mypy==1.15
+mypy==1.16.1
 
 # needed for peg_generator:
-types-psutil==6.0.0.20240901
-types-setuptools==74.0.0.20240831
+types-psutil==7.0.0.20250601
+types-setuptools==80.9.0.20250529