diff --git a/stubs/pytest.pyi b/stubs/pytest.pyi
new file mode 100644
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--- /dev/null
+++ b/stubs/pytest.pyi
@@ -0,0 +1,15 @@
+"""
+Type stubs for pytest.
+
+Note that stubs are only written for the parts that we use.
+"""
+
+from typing import ContextManager, Type
+
+
+# This function actually has more arguments than are specified here, and the
+# context manager actually yields a _pytest._code.ExceptionInfo instead of None.
+# We don't use either of these features, so I don't think its worth including
+# them in our type stub. We can always change it later.
+def raises(exc_type: Type[Exception]) -> ContextManager[None]:
+    ...