diff --git a/Dockerfile b/Dockerfile
index b20c11632..da37d574e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM phusion/passenger-full:1.0.5
+FROM phusion/passenger-full:0.9.30
 LABEL maintainer="kgarza@datacite.org"
 
 # Set correct environment variables.
@@ -10,6 +10,9 @@ RUN usermod -a -G docker_env app
 # Use baseimage-docker's init process.
 CMD ["/sbin/my_init"]
 
+# Install Ruby 2.4.4
+RUN bash -lc 'rvm --default use ruby-2.4.4'
+
 # Update installed APT packages
 RUN apt-get update && apt-get upgrade -y -o Dpkg::Options::="--force-confold" && \
     apt-get install ntp wget tzdata pandoc -y && \
diff --git a/Gemfile b/Gemfile
index d2e8aaceb..3074534d5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -62,7 +62,7 @@ gem 'graphql-errors', '~> 0.3.0'
 # gem 'graphql-cache', '~> 0.6.0'
 
 group :development, :test do
-  gem 'rspec-rails', '~> 3.5', '>= 3.5.2'
+  gem 'rspec-rails', '~> 3.8', '>= 3.8.2'
   gem 'rspec-benchmark', '~> 0.4.0'
   gem 'rubocop', '~> 0.68.1', require: false
   gem 'rubocop-performance', '~> 1.2', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 0c258aeb9..b0d4c09f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -582,7 +582,7 @@ DEPENDENCIES
   rails (~> 5.2.0)
   rake (~> 12.0)
   rspec-benchmark (~> 0.4.0)
-  rspec-rails (~> 3.5, >= 3.5.2)
+  rspec-rails (~> 3.8, >= 3.8.2)
   rubocop (~> 0.68.1)
   rubocop-performance (~> 1.2)
   sentry-raven (~> 2.9)
diff --git a/spec/concerns/helpable_spec.rb b/spec/concerns/helpable_spec.rb
index b716c1091..f01dcc545 100644
--- a/spec/concerns/helpable_spec.rb
+++ b/spec/concerns/helpable_spec.rb
@@ -74,7 +74,7 @@
       response = subject.get_url
 
       expect(response.body.dig("data", "responseCode")).to eq(1)
-      expect(response.body.dig("data", "values")).to eq([{"index"=>1, "type"=>"URL", "data"=>{"format"=>"string", "value"=>"https://blog.datacite.org/"}, "ttl"=>86400, "timestamp"=>"2018-09-26T08:52:01Z"}])
+      expect(response.body.dig("data", "values")).to eq([{"index"=>1, "type"=>"URL", "data"=>{"format"=>"string", "value"=>"https://blog.datacite.org/"}, "ttl"=>86400, "timestamp"=>"2019-05-10T12:45:27Z"}])
     end
 
     # it 'should register on save' do
diff --git a/spec/fixtures/vcr_cassettes/Doi/register_doi/should_register.yml b/spec/fixtures/vcr_cassettes/Doi/register_doi/should_register.yml
index 7cc473ae8..f25f0078b 100644
--- a/spec/fixtures/vcr_cassettes/Doi/register_doi/should_register.yml
+++ b/spec/fixtures/vcr_cassettes/Doi/register_doi/should_register.yml
@@ -9,10 +9,10 @@ http_interactions:
     headers:
       User-Agent:
       - Mozilla/5.0 (compatible; Maremma/4.1.1; +https://github.com/datacite/maremma)
-      Content-Type:
-      - application/json;charset=UTF-8
       Accept:
       - text/html,application/json,application/xml;q=0.9, text/plain;q=0.8,image/png,*/*;q=0.5
+      Content-Type:
+      - application/json;charset=UTF-8
       Authorization:
       - Basic <HANDLE_TOKEN>
   response:
@@ -21,7 +21,7 @@ http_interactions:
       message: OK
     headers:
       Date:
-      - Wed, 26 Sep 2018 08:52:01 GMT
+      - Fri, 10 May 2019 12:45:27 GMT
       Content-Type:
       - application/json;charset=UTF-8
       Connection:
@@ -32,7 +32,7 @@ http_interactions:
       encoding: ASCII-8BIT
       string: '{"responseCode":1,"handle":"10.5438/MCNV-GA6N"}'
     http_version: 
-  recorded_at: Wed, 26 Sep 2018 08:52:01 GMT
+  recorded_at: Fri, 10 May 2019 12:45:27 GMT
 - request:
     method: get
     uri: https://handle.test.datacite.org/api/handles/10.5438/MCNV-GA6N?index=1
@@ -50,7 +50,7 @@ http_interactions:
       message: OK
     headers:
       Date:
-      - Wed, 26 Sep 2018 08:52:01 GMT
+      - Fri, 10 May 2019 12:45:27 GMT
       Content-Type:
       - application/json;charset=UTF-8
       Connection:
@@ -59,7 +59,7 @@ http_interactions:
       - Accept-Encoding
     body:
       encoding: ASCII-8BIT
-      string: '{"responseCode":1,"handle":"10.5438/MCNV-GA6N","values":[{"index":1,"type":"URL","data":{"format":"string","value":"https://blog.datacite.org/"},"ttl":86400,"timestamp":"2018-09-26T08:52:01Z"}]}'
+      string: '{"responseCode":1,"handle":"10.5438/MCNV-GA6N","values":[{"index":1,"type":"URL","data":{"format":"string","value":"https://blog.datacite.org/"},"ttl":86400,"timestamp":"2019-05-10T12:45:27Z"}]}'
     http_version: 
-  recorded_at: Wed, 26 Sep 2018 08:52:01 GMT
+  recorded_at: Fri, 10 May 2019 12:45:27 GMT
 recorded_with: VCR 3.0.3