diff --git a/src/main/ts/cli.ts b/src/main/ts/cli.ts
index af30a49..8f9390b 100644
--- a/src/main/ts/cli.ts
+++ b/src/main/ts/cli.ts
@@ -6,6 +6,18 @@ import { Command, Option } from 'commander'
 
 import { run } from './runner'
 
+const parseMultipleValueArg = (
+  value: string,
+  previous: string | string[] | undefined,
+) => {
+  if (!previous) {
+    return value
+  }
+
+  const previousArray = Array.isArray(previous) ? previous : [previous]
+  return previousArray.concat([value])
+}
+
 const env = process.env
 const flags = new Command()
   .addOption(
diff --git a/src/main/ts/util.ts b/src/main/ts/util.ts
index 03f6c1b..e57eb7c 100644
--- a/src/main/ts/util.ts
+++ b/src/main/ts/util.ts
@@ -71,10 +71,16 @@ export const formatFlags = (flags: TFlags, ...picklist: string[]): string[] =>
     const flag = formatFlag(key)
 
     if (checkValue(key, value, omitlist, picklist)) {
-      memo.push(flag)
+      if (!Array.isArray(value)) {
+        memo.push(flag)
 
-      if (value !== true) {
-        memo.push(value)
+        if (value !== true) {
+          memo.push(String(value))
+        }
+      } else {
+        value.forEach((val) => {
+          memo.push(flag, String(val))
+        })
       }
     }