diff --git a/Gemfile.lock b/Gemfile.lock
index 2870d0b2e..66d3b8d88 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,11 +61,10 @@ GEM
       autoprefixer-rails (>= 5.0.0.1)
       sass (>= 3.3.0)
     builder (3.2.2)
-    bullet (4.14.7)
+    bullet (4.14.10)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.9.0)
-    byebug (5.0.0)
-      columnize (= 0.9.0)
+    byebug (6.0.2)
     capybara (2.5.0)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -84,7 +83,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.9.1.1)
-    columnize (0.9.0)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     crass (1.0.2)
@@ -117,7 +115,7 @@ GEM
       railties (>= 3.0.0)
     faker (1.5.0)
       i18n (~> 0.5)
-    faraday (0.9.1)
+    faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
     font-awesome-rails (4.4.0.0)
       railties (>= 3.2, < 5.0)
@@ -131,7 +129,8 @@ GEM
       multi_json (~> 1.0)
       sprockets (>= 2.0.0, < 4.0)
       tilt (~> 1.2)
-    hashie (3.4.2)
+    hashdiff (0.2.2)
+    hashie (3.4.3)
     heroku-api (0.3.23)
       excon (~> 0.44)
       multi_json (~> 1.8)
@@ -170,12 +169,12 @@ GEM
       railties
     mime-types (2.6.2)
     mini_portile (0.6.2)
-    minitest (5.8.1)
+    minitest (5.8.2)
     multi_json (1.11.2)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     nested_form (0.3.2)
-    newrelic_rpm (3.13.2.302)
+    newrelic_rpm (3.14.0.305)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     nokogumbo (1.4.1)
@@ -201,7 +200,7 @@ GEM
     omniauth-oauth (1.1.0)
       oauth
       omniauth (~> 1.0)
-    omniauth-oauth2 (1.3.1)
+    omniauth-oauth2 (1.4.0)
       oauth2 (~> 1.0)
       omniauth (~> 1.2)
     omniauth-twitter (1.2.1)
@@ -289,7 +288,7 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.4.4)
       nokogumbo (= 1.4.1)
-    sass (3.4.18)
+    sass (3.4.19)
     sass-rails (5.0.4)
       railties (>= 4.0.0, < 5.0)
       sass (~> 3.1)
@@ -298,18 +297,18 @@ GEM
       tilt (>= 1.1, < 3)
     sentry-raven (0.15.2)
       faraday (>= 0.7.6)
-    shoulda-matchers (3.0.0)
+    shoulda-matchers (3.0.1)
       activesupport (>= 4.0.0)
     simple_form (3.2.0)
       actionpack (~> 4.0)
       activemodel (~> 4.0)
-    sprockets (3.3.5)
+    sprockets (3.4.0)
       rack (> 1, < 3)
     sprockets-rails (2.3.3)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
-    sqlite3 (1.3.10)
+    sqlite3 (1.3.11)
     test_after_commit (0.4.1)
       activerecord (>= 3.2)
     thor (0.19.1)
@@ -323,9 +322,10 @@ GEM
     uniform_notifier (1.9.0)
     warden (1.2.3)
       rack (>= 1.0)
-    webmock (1.21.0)
+    webmock (1.22.1)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
+      hashdiff
     websocket-driver (0.6.2)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
diff --git a/app/models/event.rb b/app/models/event.rb
index 41ba70cae..4d42f82ff 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -51,12 +51,12 @@ class Event < ActiveRecord::Base
 
   with_options(unless: :historical?) do |normal_event|
     normal_event.with_options(if: :allow_student_rsvp?) do |workshop_event|
-      workshop_event.validates_numericality_of :student_rsvp_limit, only_integer: true, greater_than: 0
+      workshop_event.validates_numericality_of :student_rsvp_limit, greater_than: 0
       workshop_event.validate :validate_student_rsvp_limit
     end
   
     with_options(if: :has_volunteer_limit?) do |workshop_event|
-      workshop_event.validates_numericality_of :volunteer_rsvp_limit, only_integer: true, greater_than: 0
+      workshop_event.validates_numericality_of :volunteer_rsvp_limit, greater_than: 0
       workshop_event.validate :validate_volunteer_rsvp_limit
     end
   end
diff --git a/spec/models/event_spec.rb b/spec/models/event_spec.rb
index 2d9b2960a..a1953e981 100644
--- a/spec/models/event_spec.rb
+++ b/spec/models/event_spec.rb
@@ -8,8 +8,8 @@
   it { is_expected.to belong_to(:location) }
   it { is_expected.to have_many(:rsvps) }
   it { is_expected.to have_many(:event_sessions) }
-  it { is_expected.to validate_numericality_of(:student_rsvp_limit) }
-  it { is_expected.to validate_numericality_of(:volunteer_rsvp_limit) }
+  it { is_expected.to validate_numericality_of(:student_rsvp_limit).is_greater_than(0) }
+  it { is_expected.to validate_numericality_of(:volunteer_rsvp_limit).is_greater_than(0) }
   it { is_expected.to validate_presence_of(:title) }
 
   describe "validation of target_audience" do
diff --git a/spec/support/shoulda_matchers_monkeypatch.rb b/spec/support/shoulda_matchers_monkeypatch.rb
index 2b2993fc7..5f3c2c613 100644
--- a/spec/support/shoulda_matchers_monkeypatch.rb
+++ b/spec/support/shoulda_matchers_monkeypatch.rb
@@ -1,22 +1,3 @@
-module Shoulda
-  module Matchers
-    module ActiveModel
-      class ValidateNumericalityOfMatcher
-        def add_disallow_value_matcher
-          disallow_value_matcher = DisallowValueMatcher.new(NON_NUMERIC_VALUE).
-            for(@attribute).
-            with_message(:not_a_number)
-          disallow_value_matcher
-            .instance_variable_get(:@allow_matcher)
-            .ignoring_interference_by_writer
-
-          add_submatcher(disallow_value_matcher)
-        end
-      end
-    end
-  end
-end
-
 module Shoulda
   module Matchers
     module ActiveRecord