diff --git a/lib/pip.js b/lib/pip.js
index ccb809c3..059ccb26 100644
--- a/lib/pip.js
+++ b/lib/pip.js
@@ -376,10 +376,10 @@ async function installRequirements(targetFolder, pluginInstance) {
         break;
     }
 
-    let spawnArgs = { shell: true };
-    if (process.env.SLS_DEBUG) {
-      spawnArgs.stdio = 'inherit';
-    }
+    const spawnArgs = {
+      shell: true,
+      stdio: 'inherit',
+    };
     let mainCmds = [];
     if (dockerCmd.length) {
       dockerCmd.push(...mergeCommands(pipCmds));
@@ -397,7 +397,7 @@ async function installRequirements(targetFolder, pluginInstance) {
 
     for (const [cmd, ...args] of mainCmds) {
       try {
-        await spawn(cmd, args);
+        await spawn(cmd, args, spawnArgs);
       } catch (e) {
         if (
           e.stderrBuffer &&