diff --git a/tensorflow_estimator/tools/pip_package/setup.py b/tensorflow_estimator/tools/pip_package/setup.py
index 65fb9bc5..c5142f3e 100644
--- a/tensorflow_estimator/tools/pip_package/setup.py
+++ b/tensorflow_estimator/tools/pip_package/setup.py
@@ -30,7 +30,7 @@
 # This version string is semver compatible, but incompatible with pip.
 # For pip, we will remove all '-' characters from this string, and use the
 # result for pip.
-_VERSION = '2.15.0'
+_VERSION = '2.15.0-rc0'
 
 REQUIRED_PACKAGES = [
     # We depend on TensorFlow's declared pip dependencies.