diff --git a/CHANGES.md b/CHANGES.md
index c9248a6..a31c582 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # `bw2io` Changelog
 
+## 0.9.1 (2024-12-02)
+
+* Fix product information ecospold2 extraction with invalid inputs
+
 ## 0.9 (2024-11-27)
 
 * Allow separate products for SimaPro block CSV importer
diff --git a/bw2io/__init__.py b/bw2io/__init__.py
index 3d2f090..c0a13ae 100644
--- a/bw2io/__init__.py
+++ b/bw2io/__init__.py
@@ -48,7 +48,7 @@
     "useeio20",
 ]
 
-__version__ = "0.9"
+__version__ = "0.9.1"
 
 from .backup import (
     backup_data_directory,