diff --git a/.ruby-version b/.ruby-version
index 5bc1cc43d..e75da3e63 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.2.7
+2.3.6
diff --git a/Dockerfile b/Dockerfile
index 0c2c51e25..480231fc2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.2
+FROM ruby:2.3
 MAINTAINER maciej.szlosarczyk@internet.ee
 
 RUN apt-get update > /dev/null && apt-get install -y > /dev/null \