diff --git a/lib/index.d.ts b/lib/index.d.ts
index 36c052c..764c435 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -140,7 +140,7 @@ declare namespace postcssValueParser {
      * @param custom A custom stringifier callback
      * @returns The generated CSS value
      */
-    stringify(nodes: Node[], custom?: CustomStringifierCallback): string;
+    stringify(nodes: Node | Node[], custom?: CustomStringifierCallback): string;
 
     /**
      * Walk a series of nodes, applying a callback
diff --git a/package.json b/package.json
index fdee637..44e04cd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcss-value-parser",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "description": "Transforms css values and at-rule params into the tree",
   "main": "lib/index.js",
   "files": [