diff --git a/src/run_commands.ts b/src/run_commands.ts
index 42ad882..a8d8368 100644
--- a/src/run_commands.ts
+++ b/src/run_commands.ts
@@ -1,4 +1,4 @@
-import { isWindows, OneOrMore } from "./util.ts";
+import { isWindows, OneOrMore, escape } from "./util.ts";
 import { log } from "./logger.ts";
 import {
   EnvironmentVariables,
@@ -89,7 +89,9 @@ function buildShellArgs(
 ): string[] {
   const fullCmd = additionalArgs.length < 1
     ? command
-    : `${command} ${additionalArgs.join(" ")}`;
+    : `${command} ${
+      additionalArgs.map((a) => `"${escape(a, '"')}"`).join(" ")
+    }`;
   if (isWindows && /^(?:.*\\)?cmd(?:\.exe)?$/i.test(shell)) {
     return ["/d", "/s", "/c", fullCmd];
   }
diff --git a/src/util.ts b/src/util.ts
index a5370da..2c4b549 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -2,9 +2,9 @@ export type OneOrMore<T> = T | T[];
 
 export const isWindows = Deno.build.os == "windows";
 
-export function escape(str: string, ...chars: string[]): string {
-  return chars.reduce(
-    (str, char) => str.replace(RegExp(char, "g"), `\\${char}`),
+export function escape(str: string, ...exp: string[]): string {
+  return exp.reduce(
+    (str, e) => str.replace(RegExp(e, "g"), `\\${e}`),
     str,
   );
 }