diff --git a/Dockerfile b/Dockerfile
index 70cb0de2e9fae35bc9be735363f598a4bd44af1b..bf23ff3e6b786d9e0b13f2c285d8b43ddfbfd6f4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,3 @@
 FROM graylog/graylog:3.1
 MAINTAINER Andrej Ramašeuski <andrej.ramaseuski@pirati.cz>
-RUN wget -O /usr/share/graylog/plugin/graylog-plugin-auth-sso-3.1.0.jar https://github.com/Graylog2/graylog-plugin-auth-sso/releases/download/3.0.0/graylog-plugin-auth-sso-3.1.0.jar
+RUN apt-get install wget && wget -O /usr/share/graylog/plugin/graylog-plugin-auth-sso-3.1.0.jar https://github.com/Graylog2/graylog-plugin-auth-sso/releases/download/3.0.0/graylog-plugin-auth-sso-3.1.0.jar