diff --git a/Gemfile b/Gemfile
index 250e2d87..977b87e2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -91,7 +91,7 @@ group :test do
   gem "capybara-select-2", "~> 0.5.1"
 
   gem "factory_bot_rails", "~> 6.4"
-  gem "shoulda-matchers", "~> 5.3"
+  gem "shoulda-matchers", "~> 6.0"
 
   gem "jsonapi-rspec"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index a68ea510..06f6da53 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -129,7 +129,7 @@ GEM
       execjs (~> 2.0)
     base64 (0.2.0)
     bcrypt (3.1.19)
-    bigdecimal (3.1.4)
+    bigdecimal (3.1.5)
     bindex (0.8.1)
     bootsnap (1.17.0)
       msgpack (~> 1.2)
@@ -437,7 +437,7 @@ GEM
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
     semantic_range (3.0.0)
-    shoulda-matchers (5.3.0)
+    shoulda-matchers (6.0.0)
       activesupport (>= 5.2.0)
     sprockets (4.2.0)
       concurrent-ruby (~> 1.0)
@@ -550,7 +550,7 @@ DEPENDENCIES
   rubyXL
   sass-rails (~> 6.0)
   select2-rails (~> 4.0)!
-  shoulda-matchers (~> 5.3)
+  shoulda-matchers (~> 6.0)
   standard
   turbolinks (~> 5)
   tzinfo-data