1 files changed, 12 insertions, 3 deletions
diff --git a/tests/plugin_config.py b/tests/plugin_config.py
index c4d3cf65..bb6893e3 100644
--- a/tests/plugin_config.py
+++ b/tests/plugin_config.py
@@ -3,20 +3,29 @@
 
 """A configuring plugin for test_plugins.py to import."""
 
+from __future__ import annotations
+
+from typing import Any, List, cast
+
 import coverage
+from coverage.plugin_support import Plugins
+from coverage.types import TConfigurable
 
 
 class Plugin(coverage.CoveragePlugin):
     """A configuring plugin for testing."""
-    def configure(self, config):
+    def configure(self, config: TConfigurable) -> None:
         """Configure all the things!"""
         opt_name = "report:exclude_lines"
-        exclude_lines = config.get_option(opt_name)
+        exclude_lines = cast(List[str], config.get_option(opt_name))
         exclude_lines.append(r"pragma: custom")
         exclude_lines.append(r"pragma: or whatever")
         config.set_option(opt_name, exclude_lines)
 
 
-def coverage_init(reg, options):        # pylint: disable=unused-argument
+def coverage_init(
+    reg: Plugins,
+    options: Any,           # pylint: disable=unused-argument
+) -> None:
     """Called by coverage to initialize the plugins here."""
     reg.add_configurer(Plugin())