diff --git a/engine/add.sh b/engine/add.sh
index 14f6045..72e0f0d 100755
--- a/engine/add.sh
+++ b/engine/add.sh
@@ -21,7 +21,7 @@ function uri_parser() {
     uri="${uri//\"/%22}"
 
     # top level parsing
-    pattern='^(([a-z]{3,5})://)?((([^:\/]+)(:([^@\/]*))?@)?([^:\/?]+)(:([0-9]+))?)(\/[^?]*)?(\?[^#]*)?(#.*)?$'
+    pattern='^(([a-z]{3,6})://)?((([^:\/]+)(:([^@\/]*))?@)?([^:\/?]+)(:([0-9]+))?)(\/[^?]*)?(\?[^#]*)?(#.*)?$'
     [[ "$uri" =~ $pattern ]] || return 1;
 
     # component extraction