diff --git a/MANIFEST.in b/MANIFEST.in
index eb67e6d4..b0899783 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1,2 @@
+global-include *.pyx
 include nmmo/resource/*
diff --git a/nmmo/version.py b/nmmo/version.py
index a33997dd..55fa725b 100644
--- a/nmmo/version.py
+++ b/nmmo/version.py
@@ -1 +1 @@
-__version__ = '2.1.0'
+__version__ = '2.1.1'