diff --git a/pyproject.toml b/pyproject.toml
index cd73b2a..aeda915 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,12 +11,13 @@ description = "Sniff out which async library your code is running under"
 readme = "README.rst"
 authors = [{name = "Nathaniel J. Smith", email = "njs@pobox.com"}]
 license = {text = "MIT OR Apache-2.0"}
-keywords = ["async", "trio", "asyncio"]
+keywords = ["async", "trio", "asyncio", "twisted"]
 classifiers = [
     "License :: OSI Approved :: MIT License",
     "License :: OSI Approved :: Apache Software License",
     "Framework :: Trio",
     "Framework :: AsyncIO",
+    "Framework :: Twisted",
     "Operating System :: POSIX :: Linux",
     "Operating System :: MacOS :: MacOS X",
     "Operating System :: Microsoft :: Windows",
diff --git a/sniffio/_impl.py b/sniffio/_impl.py
index c1a7bbf..0ba46a9 100644
--- a/sniffio/_impl.py
+++ b/sniffio/_impl.py
@@ -35,6 +35,8 @@ def current_async_library() -> str:
     **asyncio**                      ``"asyncio"``
     **Trio-asyncio**    v0.8.2+     ``"trio"`` or ``"asyncio"``,
                                     depending on current mode
+    **Twisted**         v?+          ``"twisted"`` or ``"asyncio"``,
+                                    depending on current mode
     ================   ===========  ============================
 
     Returns: