diff --git a/tripleo_common/constants.py b/tripleo_common/constants.py
index 8f2a6cb68..6807365f3 100644
--- a/tripleo_common/constants.py
+++ b/tripleo_common/constants.py
@@ -160,6 +160,12 @@ DO_NOT_ROTATE_LIST = (
 
 PLAN_NAME_PATTERN = '^[a-zA-Z0-9-]+$'
 
+# The default version of the Identity API to set in overcloudrc.
+DEFAULT_IDENTITY_API_VERSION = '3'
+
+# The default version of the Compute API to set in overcloudrc.
+DEFAULT_COMPUTE_API_VERSION = '2.latest'
+
 # The default version of the Image API to set in overcloudrc.
 DEFAULT_IMAGE_API_VERSION = '2'
 
diff --git a/tripleo_common/utils/overcloudrc.py b/tripleo_common/utils/overcloudrc.py
index baf99d38f..173da5ff4 100644
--- a/tripleo_common/utils/overcloudrc.py
+++ b/tripleo_common/utils/overcloudrc.py
@@ -92,8 +92,8 @@ def create_overcloudrc(stack, no_proxy, admin_password, region_name):
         'OS_AUTH_TYPE': 'password',
         'OS_PASSWORD': admin_password,
         'OS_AUTH_URL': overcloud_endpoint.replace('/v2.0', ''),
-        'OS_IDENTITY_API_VERSION': '3',
-        'OS_COMPUTE_API_VERSION': '2.latest',
+        'OS_IDENTITY_API_VERSION': constants.DEFAULT_IDENTITY_API_VERSION,
+        'OS_COMPUTE_API_VERSION': constants.DEFAULT_COMPUTE_API_VERSION,
         'OS_IMAGE_API_VERSION': constants.DEFAULT_IMAGE_API_VERSION,
         'OS_VOLUME_API_VERSION': constants.DEFAULT_VOLUME_API_VERSION,
         'OS_REGION_NAME': region_name or 'regionOne'