diff --git a/MANIFEST.in b/MANIFEST.in
index bea6bbe..5c0ebdf 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,6 +2,7 @@ include *.in
 include *.ini
 include *.py
 include *.rst
+include pathspec/py.typed
 include LICENSE
 recursive-include doc *
 recursive-include tests *
diff --git a/pathspec/py.typed b/pathspec/py.typed
new file mode 100644
index 0000000..b01eaaf
--- /dev/null
+++ b/pathspec/py.typed
@@ -0,0 +1 @@
+# Marker file for PEP 561.  The pathspec package uses inline types.