diff --git a/gulp/images.coffee b/gulp/images.coffee
index 302b1479..086329c4 100644
--- a/gulp/images.coffee
+++ b/gulp/images.coffee
@@ -8,4 +8,6 @@ gulp.task 'meetup-thumbnails', ->
         .pipe gulp.dest gulp.config.outputDir + '/images/meetups/thumbnails'
 
 gulp.task 'copy-images', ->
-    gulp.copy gulp.config.assetsDir + '/images/**/*', gulp.config.outputDir + '/images'
+    gulp.src gulp.config.assetsDir + '/images/**/*'
+        .pipe gulp.plugins.imagemin()
+        .pipe gulp.dest gulp.config.outputDir + '/images'