diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index efd6edc2..f86b3cf6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -112,6 +112,7 @@ export AWS_DEFAULT_REGION='us-east-1'
 export AWS_ACCESS_KEY_ID=test
 export AWS_SECRET_ACCESS_KEY=test
 export AWS_ENDPOINT_URL_S3='http://127.0.0.1:4566'
+export AWS_ENDPOINT_DYNAMODB='http://127.0.0.1:4566'
 
 # For letting the frontend know the backend URL.
 export VITE_APP_BACKEND_URL='http://127.0.0.1:8080'
diff --git a/env.sh.example b/env.sh.example
index 0f326f1e..204b7d40 100644
--- a/env.sh.example
+++ b/env.sh.example
@@ -6,6 +6,7 @@ export AWS_DEFAULT_REGION='us-east-1'
 export AWS_ACCESS_KEY_ID=test
 export AWS_SECRET_ACCESS_KEY=test
 export AWS_ENDPOINT_URL_S3='http://127.0.0.1:4566'
+export AWS_ENDPOINT_URL_DYNAMODB='http://127.0.0.1:4566'
 
 # For letting the frontend know the backend URL.
 export VITE_APP_BACKEND_URL='http://127.0.0.1:8080'