diff --git a/Dockerfile.ruby-2.2 b/Dockerfile.ruby-2.2
index 1da95b4..fc42a19 100644
--- a/Dockerfile.ruby-2.2
+++ b/Dockerfile.ruby-2.2
@@ -1,4 +1,4 @@
-FROM ruby:2.3
+FROM ruby:2.2
 
 ENV PACKAGES "git-core"
 
diff --git a/Dockerfile.ruby-2.3 b/Dockerfile.ruby-2.3
index fc42a19..1da95b4 100644
--- a/Dockerfile.ruby-2.3
+++ b/Dockerfile.ruby-2.3
@@ -1,4 +1,4 @@
-FROM ruby:2.2
+FROM ruby:2.3
 
 ENV PACKAGES "git-core"