diff --git a/bonobo/_version.py b/bonobo/_version.py
index 7fd229a..fc79d63 100644
--- a/bonobo/_version.py
+++ b/bonobo/_version.py
@@ -1 +1 @@
-__version__ = '0.2.0'
+__version__ = '0.2.1'
diff --git a/bonobo/util/objects.py b/bonobo/util/objects.py
index 0f33301..b233fff 100644
--- a/bonobo/util/objects.py
+++ b/bonobo/util/objects.py
@@ -25,6 +25,7 @@ class ValueHolder:
     at least all in a certain category, but it feels like a more correct method should exist, like with a getattr-something on the
     value. Let's see later.
     """
+
     def __init__(self, value, *, type=None):
         self.value = value
         self.type = type
@@ -117,10 +118,10 @@ class ValueHolder:
         return divmod(other, self.value)
 
     def __pow__(self, other):
-        return self.value ** other
+        return self.value**other
 
     def __rpow__(self, other):
-        return other ** self.value
+        return other**self.value
 
     def __ipow__(self, other):
         self.value **= other
@@ -181,4 +182,3 @@ class ValueHolder:
 
     def __invert__(self):
         return ~self.value
-
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 887c22a..ea9eaa0 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -1,20 +1,18 @@
 Changelog
 =========
 
+v.0.2.1
+:::::::
 
-Incoming...
-:::::::::::
-
-* todo migrate doc
-* todo migrate tests
-* todo migrate transforms ?
-
-Version 0.3
-:::::::::::
-
-* Autodetect if within jupyter notebook context, and apply plugin if it's the case.
-* Console run should allow console plugin as a command line argument.
-* New bonobo.structs package with simple data structures (bags, graphs, tokens).
+* Plugins (jupyter, console) are now auto-activated depending on the environment when using bonobo.run(...).
+* Remove dependencies to toolz (which was unused) and blessings (which caused problems on windows).
+* New dependency on colorama, which has better cross-platform support than blessings.
+* New bonobo.structs package containing basic datastructures, like graphs, tokens and bags.
+* Enhancements of ValueHolder to implement basic operators on its value without referencing the value attribute.
+* Fix issue with timezone argument of OpenDataSoftAPI (Sanket Dasgupta).
+* Fix Jupyter plugin.
+* Better continuous integration, testing and fixes in documentation.
+* Version updates for dependencies (psutil install problem on windows).
 
 Initial release
 :::::::::::::::