diff --git a/pyproject.toml b/pyproject.toml
index 00d8c9efd..adb917e0b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,9 @@ per-file-ignores = ["test/*:D100,D101,D102,D103,D104"]
 docstring-convention = "google"
 
 [tool.pyright]
-include = ["ops/*.py", "ops/_private/*.py"]
+include = ["ops/*.py", "ops/_private/*.py",
+    "test/test_infra.py",
+]
 pythonVersion = "3.8" # check no python > 3.8 features are used
 pythonPlatform = "All"
 typeCheckingMode = "strict"