diff --git a/mesonbuild/arglist.py b/mesonbuild/arglist.py
index 4ab7d0990..b7fa749ee 100644
--- a/mesonbuild/arglist.py
+++ b/mesonbuild/arglist.py
@@ -164,7 +164,7 @@ class CompilerArgs(collections.abc.MutableSequence):
     def __getitem__(self, index: slice) -> T.MutableSequence[str]:  # noqa: F811
         pass
 
-    def __getitem__(self, index):  # noqa: F811
+    def __getitem__(self, index):  # type: ignore  # noqa: F811
         self.flush_pre_post()
         return self._container[index]
 
@@ -176,7 +176,7 @@ class CompilerArgs(collections.abc.MutableSequence):
     def __setitem__(self, index: slice, value: T.Iterable[str]) -> None:  # noqa: F811
         pass
 
-    def __setitem__(self, index, value) -> None:  # noqa: F811
+    def __setitem__(self, index, value) -> None:  # type: ignore  # noqa: F811
         self.flush_pre_post()
         self._container[index] = value
 
@@ -242,7 +242,7 @@ class CompilerArgs(collections.abc.MutableSequence):
             new = self.copy()
         else:
             new = self
-        return self.compiler.unix_args_to_native(new._container)
+        return T.cast(T.List[str], self.compiler.unix_args_to_native(new._container))
 
     def append_direct(self, arg: str) -> None:
         '''
diff --git a/mesonbuild/compilers/mixins/intel.py b/mesonbuild/compilers/mixins/intel.py
index fbbfdc54c..eb4b10d75 100644
--- a/mesonbuild/compilers/mixins/intel.py
+++ b/mesonbuild/compilers/mixins/intel.py
@@ -69,7 +69,7 @@ class IntelGnuLikeCompiler(GnuLikeCompiler):
         's': ['-Os'],
     }
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
         # As of 19.0.0 ICC doesn't have sanitizer, color, or lto support.
         #
@@ -152,7 +152,7 @@ class IntelVisualStudioLikeCompiler(VisualStudioLikeCompiler):
         super().__init__(target)
         self.id = 'intel-cl'
 
-    def compile(self, code, *, extra_args: T.Optional[T.List[str]] = None, **kwargs) -> T.Iterator['subprocess.Popen']:
+    def compile(self, code: str, *, extra_args: T.Optional[T.List[str]] = None, **kwargs) -> T.Iterator['subprocess.Popen']:
         # This covers a case that .get('foo', []) doesn't, that extra_args is
         if kwargs.get('mode', 'compile') != 'link':
             extra_args = extra_args.copy() if extra_args is not None else []
diff --git a/run_mypy.py b/run_mypy.py
index 71b67270c..c7d44b606 100755
--- a/run_mypy.py
+++ b/run_mypy.py
@@ -40,6 +40,8 @@ strict_modules = [
   'mesonbuild/scripts',
   'mesonbuild/dependencies/boost.py',
   'mesonbuild/dependencies/hdf5.py',
+  'mesonbuild/compilers/mixins/intel.py',
+  'mesonbuild/arglist.py',
   'run_mypy.py',
   'tools',
 ]