diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..15ec8a3
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,3 @@
+include resultify/py.typed
+prune test/
+include LICENSE  README.md
diff --git a/resultify/py.typed b/resultify/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/setup.py b/setup.py
index 2294b46..1336d6e 100644
--- a/setup.py
+++ b/setup.py
@@ -17,9 +17,8 @@
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
     ],
     keywords="rust result",
     packages=["resultify"],