diff --git a/MANIFEST.in b/MANIFEST.in
index 5e83860..cfaafe3 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,7 +1,7 @@
 include *.rst
 recursive-include docs *
 recursive-include examples *
-recursive-include src/hyperscan *.c *.cpp *.h *.pyx *.pxd *.pxi
+recursive-include src/hyperscan *.c *.cpp *.h *.pyx *.pxd *.pxi py.typed
 include COPYING
 include README.md
 include README.rst
diff --git a/src/hyperscan/py.typed b/src/hyperscan/py.typed
new file mode 100644
index 0000000..e69de29