diff --git a/Dockerfile b/Dockerfile
index e50e912..c9bc7fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,17 +5,13 @@ ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=nonint
 
 RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     apt-get -y update && \
-    apt-get --force-yes -yq install wget apt-transport-https && \
+    apt-get --force-yes -yq install wget apt-transport-https curl && \
     apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D9D0BF019CC8AC0D && \
-    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 1655A0AB68576280 && \
     echo "deb http://archive.ubuntu.com/ubuntu precise main universe multiverse" >> /etc/apt/sources.list && \
-    echo "deb https://deb.nodesource.com/node_4.x trusty main" | tee /etc/apt/sources.list.d/nodesource.list && \
     locale-gen en_US.UTF-8 && \
+    curl -sL https://deb.nodesource.com/setup_6.x | bash - && \
     apt-get -y update && \
     echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selections && \
-    apt-get install --force-yes -yq software-properties-common && \
-    add-apt-repository ppa:ubuntu-toolchain-r/test && \
-    apt-get -y update && \
     apt-get --force-yes -yq install software-properties-common adduser postgresql redis-server rabbitmq-server nginx-extras nodejs libstdc++6 libcurl3 libxml2 libboost-regex-dev zlib1g supervisor fonts-dejavu fonts-liberation ttf-mscorefonts-installer fonts-crosextra-carlito fonts-takao-gothic fonts-opensymbol libxss1 libgtkglext1 libcairo2 xvfb libxtst6 libgconf2-4 libasound2 bomstrip libnspr4 libnss3 libnss3-nssdb nano htop && \
     sudo -u postgres psql -c "CREATE DATABASE onlyoffice;" && \
     sudo -u postgres psql -c "CREATE USER onlyoffice WITH password 'onlyoffice';" && \
diff --git a/config/nginx/onlyoffice-documentserver-ssl.conf b/config/nginx/onlyoffice-documentserver-ssl.conf
index 78b6753..26501a9 100644
--- a/config/nginx/onlyoffice-documentserver-ssl.conf
+++ b/config/nginx/onlyoffice-documentserver-ssl.conf
@@ -25,8 +25,8 @@ server {
 
 ## HTTPS host
 server {
-  listen 0.0.0.0:443 ssl spdy;
-  listen [::]:443 ssl spdy default_server;
+  listen 0.0.0.0:443 ssl;
+  listen [::]:443 ssl default_server;
   server_tokens off;
   root /usr/share/nginx/html;