diff --git a/.gitignore b/.gitignore
index 0f54e63ea7de6237962cd12968149210553c653f_LmdpdGlnbm9yZQ==..07aa025be85f856027094d2cae8776aa40307454_LmdpdGlnbm9yZQ== 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,7 +6,6 @@
 bin/*
 files/**/cache/
 vendor/cookbooks
-.ruby-version
 .ruby-gemset
 .rvmrc
 .rbenv-version
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0f54e63ea7de6237962cd12968149210553c653f_LmdpdGxhYi1jaS55bWw=..07aa025be85f856027094d2cae8776aa40307454_LmdpdGxhYi1jaS55bWw= 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -294,7 +294,7 @@
 rubocop:
   stage: check
   <<: *dedicated-runner
-  image: ruby:2.3.3
+  image: ruby:2.3
   before_script:
     - bundle install -j $(nproc) --binstubs --path gems --without default test
   script:
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000000000000000000000000000000000000..07aa025be85f856027094d2cae8776aa40307454_LnJ1YnktdmVyc2lvbg==
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1,1 @@
+ruby-2.3.7