diff --git a/doc/ci/variables/index.md b/doc/ci/variables/index.md
index 01de75af6bf..9dc32c65803 100644
--- a/doc/ci/variables/index.md
+++ b/doc/ci/variables/index.md
@@ -640,12 +640,15 @@ To disable variable expansion for the variable:
 
 ## CI/CD variable precedence
 
+> Scan Execution Policies variable precedence was [changed](https://gitlab.com/gitlab-org/gitlab/-/issues/424028) in GitLab 16.6 [with a flag](../../administration/feature_flags.md) named `security_policies_variables_precedence`. Disabled by default.
+
 You can use CI/CD variables with the same name in different places, but the values
 can overwrite each other. The type of variable and where they are defined determines
 which variables take precedence.
 
 The order of precedence for variables is (from highest to lowest):
 
+1. [Scan Execution Policies variables](../../user/application_security/policies/scan-execution-policies.md).
 1. These variables all have the same (highest) precedence:
    - [Trigger variables](../triggers/index.md#pass-cicd-variables-in-the-api-call).
    - [Scheduled pipeline variables](../pipelines/schedules.md#add-a-pipeline-schedule).
diff --git a/doc/user/application_security/policies/scan-execution-policies.md b/doc/user/application_security/policies/scan-execution-policies.md
index f03b0633096..cebd0c2cf38 100644
--- a/doc/user/application_security/policies/scan-execution-policies.md
+++ b/doc/user/application_security/policies/scan-execution-policies.md
@@ -201,6 +201,8 @@ The keys for a schedule rule are:
 
 ## `scan` action type
 
+> Scan Execution Policies variable precedence was [changed](https://gitlab.com/gitlab-org/gitlab/-/issues/424028) in GitLab 16.6 [with a flag](../../../administration/feature_flags.md) named `security_policies_variables_precedence`. Disabled by default.
+
 This action executes the selected `scan` with additional parameters when conditions for at least one
 rule in the defined policy are met.
 
diff --git a/lib/gitlab/ci/variables/builder.rb b/lib/gitlab/ci/variables/builder.rb
index d0bd26e995b..a1c6437bf84 100644
--- a/lib/gitlab/ci/variables/builder.rb
+++ b/lib/gitlab/ci/variables/builder.rb
@@ -202,3 +202,5 @@ module Gitlab
     end
   end
 end
+
+Gitlab::Ci::Variables::Builder.prepend_mod_with('Gitlab::Ci::Variables::Builder')