diff --git a/CHANGELOG b/CHANGELOG
index 6b3110f..0c35710 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,6 @@
-v1.0b9
+v1.0c1
+ Version 1.0 Release Candidate 1
+
  - Documentation for the library has switched to epydoc:
      http://google-api-python-client.googlecode.com/hg/docs/epy/index.html
  - Many improvements for media support:
diff --git a/apiclient/__init__.py b/apiclient/__init__.py
index 5123f14..cce2cd7 100644
--- a/apiclient/__init__.py
+++ b/apiclient/__init__.py
@@ -1 +1 @@
-__version__ = "1.0b9"
+__version__ = "1.0c1"
diff --git a/oauth2client/__init__.py b/oauth2client/__init__.py
index 5123f14..cce2cd7 100644
--- a/oauth2client/__init__.py
+++ b/oauth2client/__init__.py
@@ -1 +1 @@
-__version__ = "1.0b9"
+__version__ = "1.0c1"