diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 00000000..6de6d055
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.5.7
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
index 7bbef609..6c1a5533 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,7 @@ git_source(:github) do |repo_name|
   "https://github.com/#{repo_name}.git"
 end
 
+ruby '2.5.7'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.1.7'
diff --git a/Gemfile.lock b/Gemfile.lock
index 47a4a872..3b549a2a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,13 +61,15 @@ GEM
       mini_mime (>= 0.1.1)
     method_source (1.0.0)
     mini_mime (1.1.0)
-    mini_portile2 (2.4.0)
     minitest (5.14.4)
     nio4r (2.5.7)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.3-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.11.3-x86_64-linux)
+      racc (~> 1.4)
     pg (1.2.3)
     puma (3.12.6)
+    racc (1.5.2)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -137,6 +139,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-19
+  x86_64-linux
 
 DEPENDENCIES
   byebug
@@ -149,5 +152,8 @@ DEPENDENCIES
   spring-watcher-listen (~> 2.0.0)
   tzinfo-data
 
+RUBY VERSION
+   ruby 2.5.7p206
+
 BUNDLED WITH
-   2.2.3
+   2.2.4
diff --git a/README.md b/README.md
index cb89988d..3f6554b5 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,7 @@ We encourage the use of any libraries for everything except the search functiona
 1. Clone the candidate's branch
 1. Execute the following:
 
+        bin/bundle
         bin/rails db:drop
         bin/setup
         bin/rspec