diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..cd9423d
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,8 @@
+include README.md LICENSE CITATION.cff
+include requirements.txt requirements_extra.txt
+include *.rst *.txt
+recursive-include coexist *.py *.pyx *.pxd *.c* *.h*
+global-exclude .DS_Store
+global-exclude __pycache__
+global-exclude *.pyc
+global-exclude *.so
diff --git a/coexist/__version__.py b/coexist/__version__.py
index a8ca169..e49506c 100644
--- a/coexist/__version__.py
+++ b/coexist/__version__.py
@@ -6,6 +6,6 @@
 # Date   : 20.01.2021
 
 
-VERSION = (0, 3, 0)
+VERSION = (0, 3, 1)
 
 __version__ = '.'.join(map(str, VERSION))