diff --git a/bin/now-alias b/bin/now-alias.js
similarity index 100%
rename from bin/now-alias
rename to bin/now-alias.js
diff --git a/bin/now-certs b/bin/now-certs.js
similarity index 100%
rename from bin/now-certs
rename to bin/now-certs.js
diff --git a/bin/now-deploy b/bin/now-deploy.js
similarity index 100%
rename from bin/now-deploy
rename to bin/now-deploy.js
diff --git a/bin/now-domains b/bin/now-domains.js
similarity index 100%
rename from bin/now-domains
rename to bin/now-domains.js
diff --git a/bin/now-list b/bin/now-list.js
similarity index 100%
rename from bin/now-list
rename to bin/now-list.js
diff --git a/bin/now-remove b/bin/now-remove.js
similarity index 100%
rename from bin/now-remove
rename to bin/now-remove.js
diff --git a/bin/now-secrets b/bin/now-secrets.js
similarity index 100%
rename from bin/now-secrets
rename to bin/now-secrets.js
diff --git a/bin/now-static b/bin/now-static.js
similarity index 100%
rename from bin/now-static
rename to bin/now-static.js
diff --git a/bin/now b/bin/now.js
similarity index 100%
rename from bin/now
rename to bin/now.js
diff --git a/gulpfile.babel.js b/gulpfile.babel.js
index d82e016..a85344e 100644
--- a/gulpfile.babel.js
+++ b/gulpfile.babel.js
@@ -3,6 +3,7 @@ import gulp from 'gulp'
 import del from 'del'
 import babel from 'gulp-babel'
 import help from 'gulp-task-listing'
+import {crop as cropExt} from 'gulp-ext'
 
 gulp.task('help', help)
 
@@ -19,6 +20,7 @@ gulp.task('compile-lib', () =>
 gulp.task('compile-bin', () =>
   gulp.src('bin/*')
   .pipe(babel())
+  .pipe(cropExt())
   .pipe(gulp.dest('build/bin')))
 
 gulp.task('watch-lib', () => gulp.watch('lib/**/*.js', ['compile-lib']))
diff --git a/package.json b/package.json
index a7ef2a7..35058f1 100644
--- a/package.json
+++ b/package.json
@@ -108,6 +108,7 @@
     "estraverse-fb": "1.3.1",
     "gulp": "3.9.1",
     "gulp-babel": "6.1.2",
+    "gulp-ext": "1.0.0",
     "gulp-task-listing": "1.0.1",
     "pkg": "3.0.0-beta.14",
     "xo": "0.17.0"