diff --git a/README.md b/README.md
index 9c9d4b4f9..1ffbe797c 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ pip install -e .
 ```
 
 ## Release notes
-### 0.3.4
+### 0.3.4 - 0.3.5
 * improved annotation support (inline annotations, annotation by url)
 * checking against MIRIAM collections and patterns
 
diff --git a/sbmlutils/_version.py b/sbmlutils/_version.py
index ba8d4e006..3e4ba89f4 100644
--- a/sbmlutils/_version.py
+++ b/sbmlutils/_version.py
@@ -1,7 +1,7 @@
 """
 Definition of version string.
 """
-__version__ = "0.3.4"
+__version__ = "0.3.5"
 
 PROGRAM_VERSION = __version__
 PROGRAM_NAME = 'sbmlutils'