diff --git a/pyproject.toml b/pyproject.toml
index 5f6d7f6..ad51fba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,6 +23,7 @@ classifiers = [
     "Programming Language :: Python :: Implementation :: PyPy",
     "Topic :: Software Development :: Libraries",
     "Topic :: Software Development :: Libraries :: Python Modules",
+    "Typing :: Typed",
 ]
 dynamic = ["version"]