diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29437e6..010db97 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Nothing yet.
 
+## [3.0.3] - 2020-04-07
+
+### Fixed
+
+  - Improve optional argument handling in `ready()` method.
+
 ## [3.0.2] - 2020-04-06
 
 ### Changed
diff --git a/index.js b/index.js
index 9f49467..9f873f4 100644
--- a/index.js
+++ b/index.js
@@ -29,12 +29,17 @@ class Pebble {
    * @returns {Promise<ChildProcess>} Promise to return spawned child process.
    */
   static async ready (args = [], env = { PEBBLE_VA_NOSLEEP: 1, PEBBLE_WFE_NONCEREJECT: 0 }) {
-
     if (this.#pebbleProcess !== null) {
       // Existing process exists, return that.
       return this.#pebbleProcess
     }
 
+    if (arguments.length === 1 && Object.prototype.toString.call(args) === '[object Object]') {
+      // env was passed as the first (and only) argument
+      env = args
+      args = []
+    }
+
     // Spawn expects argument to be an array. Automatically convert a space-delimited arguments string to one.
     if (typeof args === 'string') {
       args = args.split(' ')
diff --git a/package.json b/package.json
index 302b89e..f9e677c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@small-tech/node-pebble",
-  "version": "3.0.2",
+  "version": "3.0.3",
   "description": "A Node.js wrapper for Let’s Encrypt’s Pebble (“a small RFC 8555 ACME test server not suited for a production certificate authority”).",
   "main": "index.js",
   "os": [