diff --git a/build b/build
index 3e714bdccd..04510009c8 100755
--- a/build
+++ b/build
@@ -7,8 +7,6 @@ rm wysija-newsletters.zip;
 mkdir wysija-newsletters;
 
 # Production assets.
-rm -rf node_modules;
-npm install --production;
 ./do compile:all;
 
 # Production libraries.
@@ -22,9 +20,7 @@ cp -rf assets wysija-newsletters;
 cp -rf lib wysija-newsletters;
 cp -rf vendor wysija-newsletters;
 cp -rf views wysija-newsletters;
-rm -rf wysija-newsletters/assets/css/lib;
 rm -rf wysija-newsletters/assets/css/src;
-rm -rf wysija-newsletters/assets/js/lib;
 rm -rf wysija-newsletters/assets/js/src;
 
 # Copy release files.
@@ -40,11 +36,7 @@ zip -r wysija-newsletters.zip wysija-newsletters;
 # Remove temp dir.
 rm -rf wysija-newsletters;
 
-# Cleanup Composer and NPM.
-rm -rf vendor;
-rm -rf node_modules;
-rm composer.lock;
-
 # Reinstall dev dependencies.
+rm composer.lock;
 ./composer.phar install;
 ./do install;