diff --git a/nodejs-packages/jvm-launch-utils/package-lock.json b/nodejs-packages/jvm-launch-utils/package-lock.json
index 4a73b3208..fd443a91c 100644
--- a/nodejs-packages/jvm-launch-utils/package-lock.json
+++ b/nodejs-packages/jvm-launch-utils/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@pivotal-tools/jvm-launch-utils",
-  "version": "0.0.22",
+  "version": "0.0.23",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/nodejs-packages/jvm-launch-utils/package.json b/nodejs-packages/jvm-launch-utils/package.json
index 5c99179a8..e049b06c1 100644
--- a/nodejs-packages/jvm-launch-utils/package.json
+++ b/nodejs-packages/jvm-launch-utils/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@pivotal-tools/jvm-launch-utils",
-  "version": "0.0.22",
+  "version": "0.0.23",
   "description": "Provides utilities useful for launching Java processes from node packages.",
   "files": [
     "src",
diff --git a/nodejs-packages/jvm-launch-utils/src/jvm-util.ts b/nodejs-packages/jvm-launch-utils/src/jvm-util.ts
index dcc1a0017..67aedb96d 100644
--- a/nodejs-packages/jvm-launch-utils/src/jvm-util.ts
+++ b/nodejs-packages/jvm-launch-utils/src/jvm-util.ts
@@ -28,7 +28,7 @@ export interface JVM {
     /**
      * Launch an executable jar with this jvm.
      */
-    jarLaunch(jar: string, vmargs?: string[], execFileOptions?: ChildProcess.ExecFileOptions, pargs?: [string]) : ChildProcess.ChildProcess
+    jarLaunch(jar: string, vmargs?: string[], execFileOptions?: ChildProcess.ExecFileOptions, pargs?: string[]) : ChildProcess.ChildProcess
 
     mainClassLaunch(mainClass: string, classpath: string[], jvmArgs: string[], execFileOptions?: ChildProcess.ExecFileOptions): ChildProcess.ChildProcess
 }
@@ -185,7 +185,7 @@ class JVMImpl implements JVM {
         const str = ChildProcess.execFileSync(javaExecutable, ['--list-modules'], {windowsHide: true, encoding: 'utf8'});
         return str.search(/^jdk.management@.*$/m) >= 0;
     }
-    jarLaunch(jar: string, vmargs?: [string], execFileOptions?: ChildProcess.ExecFileOptions, pargs?: [string]): ChildProcess.ChildProcess {
+    jarLaunch(jar: string, vmargs?: string[], execFileOptions?: ChildProcess.ExecFileOptions, pargs?: string[]): ChildProcess.ChildProcess {
         let args = [];
         if (vmargs) {
             args.push(...vmargs);