diff --git a/app/sparql_proxy.py b/app/sparql_proxy.py
index 39ec0a7..f6eaab2 100644
--- a/app/sparql_proxy.py
+++ b/app/sparql_proxy.py
@@ -56,6 +56,7 @@ def proxyRequest(self, request):
         allowed = ["Content-Type", "Vary",
                    "Cache-Control", "Pragma", "Content-Encoding"]
         headers = {k: v for k, v in res.raw.headers.items() if k in allowed}
+        headers['Access-Control-Allow-Origin'] = '*'
 
         def generate():
             for chunk in res.raw.stream(decode_content=False):