diff --git a/services/clsi/nginx.conf b/services/clsi/nginx.conf
index 2d869eeb93..4f2cdd1a2b 100644
--- a/services/clsi/nginx.conf
+++ b/services/clsi/nginx.conf
@@ -62,13 +62,13 @@ server {
     root /output/$1/generated-files/$2/;
   }
   # handle output files for submissions
-  location ~ ^/project/([a-z0-9_-]+)/build/([0-9a-f-]+)/output/(.+)$ {
+  location ~ ^/project/([a-zA-Z0-9_-]+)/build/([0-9a-f-]+)/output/(.+)$ {
     if ($request_method = 'OPTIONS') {
       # handle OPTIONS method for CORS requests
       add_header 'Allow' 'GET,HEAD';
       return 204;
     }
-    rewrite ^/project/([a-z0-9_-]+)/build/([0-9a-f-]+)/output/(.+)$ /$3 break;
+    rewrite ^/project/([a-zA-Z0-9_-]+)/build/([0-9a-f-]+)/output/(.+)$ /$3 break;
     root /output/$1/generated-files/$2/;
   }