diff --git a/pyteomics/version.py b/pyteomics/version.py
index 98772034..d310ed85 100644
--- a/pyteomics/version.py
+++ b/pyteomics/version.py
@@ -13,7 +13,7 @@
 
 """
 
-__version__ = '4.4.0dev4'
+__version__ = '4.4.0beta0'
 
 from collections import namedtuple
 import re