diff --git a/Dockerfile b/Dockerfile
index 073792a..fc068a3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -42,4 +42,5 @@ RUN \
 	php7-mysqlnd \
 	php7-pdo_mysql \
 	php7-pdo_sqlite \
+	php7-sockets \
 	php7-xml
diff --git a/README.md b/README.md
index 17be6a4..fe6bd0f 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,7 @@ Add your web files to /config/www for hosting.
 
 ## Versions
 
++ **18.04.17:** Add php7-sockets
 + **27.02.17:** Rebase to alpine 3.5, update to nginx 1.10.2 and php7
 + **14.10.16:** Add version layer information.
 + **10.09.16:** Add badges to README.