diff --git a/README.md b/README.md
index 2f041c8..327db5e 100644
--- a/README.md
+++ b/README.md
@@ -8,10 +8,19 @@ This project is in a very early stage and will be both restructured and renamed.
 
 ## Quickstart
 
-to install the python and other developer requirements into a venv run:
+To install the python and other developer requirements into a venv run:
 
     make install
 
+### Configuration options
+
+There's a few env vars that can be used with this project:
+
+* `TEST_TARGET`: Set to `AWS_CLOUD` to use an externally-deployed instance when running tests.
+* `SNAPSHOT_LEGACY_REPORT`: By default set to `0`. Can be set to `1`.
+* `SNAPSHOT_UDPATE`: By default set to `0`. Can be set to `1`.
+* `SNAPSHOT_RAW`: By default set to `0`. Can be set to `1`.
+
 ## Format code
 
 We use black and isort as code style tools.