diff --git a/swagger-ui/README.md b/swagger-ui/README.md
index bcba426..a1b6a75 100644
--- a/swagger-ui/README.md
+++ b/swagger-ui/README.md
@@ -13,3 +13,4 @@ $ docker run -d -p 80:80 -e API_URL=http://localhost:4000/swagger schickling/swa
 * `API_URL` - Swagger endpoint for your API
 * `API_KEY` - Default API Key (optional)
 * `PORT`    - Default port to run on (optional)
+* `VALIDATOR_URL` - Swagger validator (optional)
diff --git a/swagger-ui/run.sh b/swagger-ui/run.sh
index 22bca36..d507362 100644
--- a/swagger-ui/run.sh
+++ b/swagger-ui/run.sh
@@ -16,4 +16,9 @@ else
   sed -i "s|http://example.com/api|$API_URL|g" index.html
 fi
 
+if [[ -n "$VALIDATOR_URL" ]]; then
+  sed -i "s|.*validatorUrl:.*$||g" index.html
+  sed -i "s|\(url: url,.*\)|\1\n        validatorUrl: \"${VALIDATOR_URL}\",|g" index.html
+fi
+
 exec http-server -p $PORT $*