1 files changed, 5 insertions, 2 deletions
diff --git a/pylint/checkers/async.py b/pylint/checkers/async.py
index 9aaead7c4..4a5c6abf2 100644
--- a/pylint/checkers/async.py
+++ b/pylint/checkers/async.py
@@ -11,6 +11,7 @@
 """Checker for anything related to the async protocol (PEP 492)."""
 
 import sys
+from typing import TYPE_CHECKING
 
 import astroid
 from astroid import nodes
@@ -19,6 +20,9 @@ from pylint import checkers, interfaces, utils
 from pylint.checkers import utils as checker_utils
 from pylint.checkers.utils import decorated_with
 
+if TYPE_CHECKING:
+    from pylint.lint import PyLinter
+
 
 class AsyncChecker(checkers.BaseChecker):
     __implements__ = interfaces.IAstroidChecker
@@ -94,6 +98,5 @@ class AsyncChecker(checkers.BaseChecker):
             )
 
 
-def register(linter):
-    """required method to auto register this checker"""
+def register(linter: "PyLinter") -> None:
     linter.register_checker(AsyncChecker(linter))