diff --git a/Gemfile b/Gemfile
index b31f371..4459b8b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem "gds-sso"
 gem "govuk_app_config"
 
 gem "mongo", "~> 2.15.1"
-gem "mongoid"
+gem "mongoid", "~> 7.5"
 
 group :development, :test do
   gem "brakeman"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4e3715e..7813782 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -538,7 +538,7 @@ DEPENDENCIES
   gds-sso
   govuk_app_config
   mongo (~> 2.15.1)
-  mongoid
+  mongoid (~> 7.5)
   rack-handlers
   rails (= 7.0.8)
   rspec-rails