diff --git a/Gemfile b/Gemfile
index 5b3a59d..2fa3ad4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -65,7 +65,7 @@ group :test do
   gem 'rspec-collection_matchers'
   gem 'rspec-mocks'
   gem 'selenium-webdriver'
-  gem 'shoulda-matchers', '~> 4.5', require: false
+  gem 'shoulda-matchers', '~> 5.3', require: false
   gem 'simplecov', require: false
   gem 'timecop'
   gem 'valid_attribute', '~> 2.0.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5aeeea4..924fcb1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
       activesupport (>= 3)
     childprocess (3.0.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.1.10)
     connection_pool (2.2.5)
     crass (1.0.6)
     debug_inspector (1.1.0)
@@ -121,7 +121,7 @@ GEM
     http-cookie (1.0.4)
       domain_name (~> 0.5)
     http-form_data (2.3.0)
-    i18n (1.8.10)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     kwalify (0.7.2)
     launchy (2.5.0)
@@ -150,7 +150,7 @@ GEM
     marcel (1.0.2)
     method_source (1.0.0)
     mini_mime (1.1.1)
-    minitest (5.14.4)
+    minitest (5.16.3)
     msgpack (1.4.2)
     nio4r (2.5.8)
     nokogiri (1.11.7-x86_64-linux)
@@ -267,8 +267,8 @@ GEM
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
     semantic_range (3.0.0)
-    shoulda-matchers (4.5.1)
-      activesupport (>= 4.2.0)
+    shoulda-matchers (5.3.0)
+      activesupport (>= 5.2.0)
     simplecov (0.21.2)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
@@ -286,7 +286,7 @@ GEM
     thor (1.1.0)
     tilt (2.0.10)
     timecop (0.9.4)
-    tzinfo (2.0.4)
+    tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     unf (0.1.4)
       unf_ext
@@ -312,7 +312,7 @@ GEM
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.4.2)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   x86_64-linux
@@ -349,7 +349,7 @@ DEPENDENCIES
   rubocop-rspec
   sass-rails (>= 6)
   selenium-webdriver
-  shoulda-matchers (~> 4.5)
+  shoulda-matchers (~> 5.3)
   simplecov
   spring
   timecop