1 files changed, 5 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 7e6cfcbc..bd8e4cfa 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -82,6 +82,11 @@ impl Builder {
         self
     }
 
+    pub fn whitelisted_var<T: Into<String>>(mut self, arg: T) -> Builder {
+        self.options.whitelisted_vars.insert(&arg.into());
+        self
+    }
+
     pub fn raw_line<T: Into<String>>(mut self, arg: T) -> Builder {
         self.options.raw_lines.push(arg.into());
         self