diff --git a/cobra/__init__.py b/cobra/__init__.py
index 62001a18e..8ffb64f82 100644
--- a/cobra/__init__.py
+++ b/cobra/__init__.py
@@ -13,7 +13,7 @@
     DictList, Gene, Metabolite, Model, Object, Reaction, Species)
 from cobra.util import show_versions
 
-__version__ = "0.12.1"
+__version__ = "0.13.0"
 
 # set the warning format to be prettier and fit on one line
 _cobra_path = _dirname(_abspath(__file__))
diff --git a/setup.cfg b/setup.cfg
index 71e6cd610..b89e4b3a1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.12.1
+current_version = 0.13.0
 commit = True
 tag = True
 parse = (?P<major>\d+)
diff --git a/setup.py b/setup.py
index de93af4a8..92cc813d4 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
 if __name__ == "__main__":
     setup(
         name="cobra",
-        version="0.12.1",
+        version="0.13.0",
         packages=find_packages(),
         setup_requires=setup_requirements,
         install_requires=[