diff --git a/php-cli/Dockerfile b/php-cli/Dockerfile
index 5429b3c..d916dfd 100644
--- a/php-cli/Dockerfile
+++ b/php-cli/Dockerfile
@@ -52,6 +52,9 @@ RUN apk update \
 
 	 && rm -rf /var/cache/apk/* 
 
+RUN apk add --no-cache --repository http://dl-3.alpinelinux.org/alpine/edge/testing gnu-libiconv
+ENV LD_PRELOAD /usr/lib/preloadable_libiconv.so php
+
 # composer
 RUN curl -sS https://getcomposer.org/installer | \
     php -- --install-dir=/usr/bin/ --filename=composer