diff --git a/webservice/Dockerfile b/webservice/Dockerfile
index d9e6197..91149a5 100644
--- a/webservice/Dockerfile
+++ b/webservice/Dockerfile
@@ -51,8 +51,6 @@ RUN \
         dom \
         gd \
         gmp \
-        iconv \
-        json \
         xmlwriter \
         zip \
         pdo_mysql \