diff --git a/scripts/constants.py b/scripts/constants.py
index f1d0bef84..d32f554f0 100644
--- a/scripts/constants.py
+++ b/scripts/constants.py
@@ -15,15 +15,15 @@
 import sys
 
 # Kubernetes branch to get the OpenAPI spec from.
-KUBERNETES_BRANCH = "release-1.5"
+KUBERNETES_BRANCH = "release-1.6"
 
 # Spec version will be set in downloaded spec and all
 # generated code will refer to it.
-SPEC_VERSION = "v1.5.1-660c2a2"
+SPEC_VERSION = "v1.6.1"
 
 # client version for packaging and releasing. It can
 # be different than SPEC_VERSION.
-CLIENT_VERSION = "1.0.0-snapshot"
+CLIENT_VERSION = "2.0.0-snapshot"
 
 # Name of the release package
 PACKAGE_NAME = "kubernetes"