diff --git a/Lib/_pyrepl/commands.py b/Lib/_pyrepl/commands.py
index 2054a8e400f..2354fbb2ec2 100644
--- a/Lib/_pyrepl/commands.py
+++ b/Lib/_pyrepl/commands.py
@@ -439,7 +439,7 @@ class help(Command):
         import _sitebuiltins
 
         with self.reader.suspend():
-            self.reader.msg = _sitebuiltins._Helper()()  # type: ignore[assignment, call-arg]
+            self.reader.msg = _sitebuiltins._Helper()()  # type: ignore[assignment]
 
 
 class invalid_key(Command):
diff --git a/Lib/test/libregrtest/setup.py b/Lib/test/libregrtest/setup.py
index c0346aa934d..c3d1f60a400 100644
--- a/Lib/test/libregrtest/setup.py
+++ b/Lib/test/libregrtest/setup.py
@@ -40,7 +40,7 @@ def setup_process() -> None:
         faulthandler.enable(all_threads=True, file=stderr_fd)
 
         # Display the Python traceback on SIGALRM or SIGUSR1 signal
-        signals = []
+        signals: list[signal.Signals] = []
         if hasattr(signal, 'SIGALRM'):
             signals.append(signal.SIGALRM)
         if hasattr(signal, 'SIGUSR1'):
diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
index e5badaccadd..5bf180bb30a 100644
--- a/Tools/requirements-dev.txt
+++ b/Tools/requirements-dev.txt
@@ -1,6 +1,6 @@
 # Requirements file for external linters and checks we run on
 # Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
-mypy==1.13
+mypy==1.15
 
 # needed for peg_generator:
 types-psutil==6.0.0.20240901