diff --git a/pysam/version.py b/pysam/version.py
index 9aa9daab..501d2294 100644
--- a/pysam/version.py
+++ b/pysam/version.py
@@ -1,5 +1,5 @@
 # pysam versioning information
-__version__ = "0.22.1"
+__version__ = "0.22.91"
 
 __samtools_version__ = "1.21"
 __bcftools_version__ = "1.21"