diff --git a/setup.cfg b/setup.cfg
index 5bc8eebc..6262e9a8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.9.0
+current_version = 0.9.1
 commit = True
 tag = True
 parse = (?P<major>\d+)
diff --git a/setup.py b/setup.py
index b9f34792..a44cc66b 100644
--- a/setup.py
+++ b/setup.py
@@ -4,4 +4,4 @@
 
 
 if __name__ == "__main__":
-    setup(version="0.9.0")
+    setup(version="0.9.1")
diff --git a/src/sbmlutils/__init__.py b/src/sbmlutils/__init__.py
index 5499e817..1a67e8c9 100644
--- a/src/sbmlutils/__init__.py
+++ b/src/sbmlutils/__init__.py
@@ -3,7 +3,7 @@
 from pathlib import Path
 
 __author__ = "Matthias König"
-__version__ = "0.9.0"
+__version__ = "0.9.1"
 
 
 program_name = "sbmlutils"