diff --git a/CHANGELOG b/CHANGELOG
index 83fdd07..c0a6693 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,13 @@
+v1.5.5
+  Version 1.5.5
+
+  Bugfix release
+
+  - Allow explicit MIME type specification with media_mime_type keyword argument.
+  - Fix unprintable representation of BatchError with default constructor. (#165)
+  - Refresh all discovery docs, not just the preferred ones. (#298)
+  - Update minimum httplib2 dependency to >=0.9.2.
+
 v1.5.4
   Version 1.5.4
 
diff --git a/googleapiclient/__init__.py b/googleapiclient/__init__.py
index bc59bdd..e80f447 100644
--- a/googleapiclient/__init__.py
+++ b/googleapiclient/__init__.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.5.4"
+__version__ = "1.5.5"
 
 # Set default logging handler to avoid "No handler found" warnings.
 import logging