diff --git a/README.md b/README.md
index be45501e73f1abeca0f7c3557b4bf33a56f39095..5a83aba71cd592e399e07a13bdc9afad57c051e6 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,10 @@ Build and distribute software with Spack
 
 The following variable(s) must be set up if not or re-configured if tokens expire.  
 	  
-OPENSHIFT_TOKEN: Token to login to OpenShift cluster (with the "gitlab" service account) 
+OPENSHIFT_TOKEN: Token to login to OpenShift cluster (with the "gitlab" service account)  
+OPENSHIFT_DEV_SERVER: The URL of the OpenShift Development cluster needed for deploying software in lab-int environment  
+BUILD_ENV: The name of the environment to deploy the software of the next commit  
+OPERATION: The operation to perform on the spack environment (one of the following: testing, create, update, delete)
   
 ## Copy spack .yaml files and packages to the Openshift job pod that does the build