diff --git a/keras_tuner/__init__.py b/keras_tuner/__init__.py
index b3a70090e..dd6a4e816 100755
--- a/keras_tuner/__init__.py
+++ b/keras_tuner/__init__.py
@@ -35,4 +35,4 @@
 
 check_tf_version()
 
-__version__ = "1.0.4"
+__version__ = "1.0.4rc0"
diff --git a/setup.py b/setup.py
index c34557726..50a830c1e 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
 from setuptools import find_packages
 from setuptools import setup
 
-version = "1.0.3"
+version = "1.0.4rc0"
 
 setup(
     name="keras-tuner",