diff --git a/app/models/vulnerability.rb b/app/models/vulnerability.rb
index 1dff78354db5f18e0c81e49b1f684f4635bcc7bd..a9e1b2dbc5b34ef4374dca39e8ad8863a4feb8ce 100644
--- a/app/models/vulnerability.rb
+++ b/app/models/vulnerability.rb
@@ -5,7 +5,7 @@ class Vulnerability < ApplicationRecord
   include EachBatch
   include IgnorableColumns
 
-  ignore_column %i[epic_id milestone_id], remove_with: '16.9', remove_after: '2023-01-13'
+  ignore_column %i[epic_id milestone_id last_edited_at], remove_with: '16.9', remove_after: '2023-01-13'
 
   alias_attribute :vulnerability_id, :id
 
diff --git a/doc/api/project_vulnerabilities.md b/doc/api/project_vulnerabilities.md
index 2b4d3ec50dfd69bdf9f4d392d4b332094ef9430e..1fbea66de7f2496e94d1a2f32352f6fdaf0a829f 100644
--- a/doc/api/project_vulnerabilities.md
+++ b/doc/api/project_vulnerabilities.md
@@ -7,7 +7,8 @@ type: reference, api
 
 # Project Vulnerabilities API **(ULTIMATE ALL)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/10242) in GitLab 12.6.
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/10242) in GitLab 12.6.
+> - `last_edited_at` [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/268154) in GitLab 16.7.
 
 WARNING:
 This API is in the process of being deprecated and considered unstable.
@@ -79,7 +80,6 @@ Example response:
             "vulnerability_id": 103
         },
         "id": 103,
-        "last_edited_at": null,
         "last_edited_by_id": null,
         "project": {
             "created_at": "2020-04-07T13:54:25.634Z",
@@ -167,7 +167,6 @@ Example response:
         "vulnerability_id": 103
     },
     "id": 103,
-    "last_edited_at": null,
     "last_edited_by_id": null,
     "project": {
         "created_at": "2020-04-07T13:54:25.634Z",
diff --git a/doc/api/vulnerabilities.md b/doc/api/vulnerabilities.md
index dc5e5c5f509eb988c38535932fb8e6f4ac189d66..ff45c5d6cfa85ee7960244af81e1a290cec06f20 100644
--- a/doc/api/vulnerabilities.md
+++ b/doc/api/vulnerabilities.md
@@ -6,7 +6,8 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Vulnerabilities API **(ULTIMATE ALL)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/10242) in GitLab 12.6.
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/10242) in GitLab 12.6.
+> - `last_edited_at` [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/268154) in GitLab 16.7.
 
 NOTE:
 The former Vulnerabilities API was renamed to Vulnerability Findings API
@@ -67,7 +68,6 @@ Example response:
   "due_date": null,
   "created_at": "2019-10-13T15:08:40.219Z",
   "updated_at": "2019-10-13T15:09:40.382Z",
-  "last_edited_at": null,
   "closed_at": null
 }
 ```
@@ -117,7 +117,6 @@ Example response:
   "due_date": null,
   "created_at": "2019-10-13T15:08:40.219Z",
   "updated_at": "2019-10-13T15:09:40.382Z",
-  "last_edited_at": null,
   "closed_at": null
 }
 ```
@@ -167,7 +166,6 @@ Example response:
   "due_date": null,
   "created_at": "2019-10-13T15:08:40.219Z",
   "updated_at": "2019-10-13T15:09:40.382Z",
-  "last_edited_at": null,
   "closed_at": null
 }
 ```
@@ -217,7 +215,6 @@ Example response:
   "due_date": null,
   "created_at": "2019-10-13T15:08:40.219Z",
   "updated_at": "2019-10-13T15:09:40.382Z",
-  "last_edited_at": null,
   "closed_at": null
 }
 ```
@@ -267,7 +264,6 @@ Example response:
   "due_date": null,
   "created_at": "2019-10-13T15:08:40.219Z",
   "updated_at": "2019-10-13T15:09:40.382Z",
-  "last_edited_at": null,
   "closed_at": null
 }
 ```
diff --git a/ee/lib/ee/api/entities/vulnerability.rb b/ee/lib/ee/api/entities/vulnerability.rb
index 504834cf353498498be0cf8c25c7bb96015f1055..c0571bb4bd1b166b0bb690999ea13b9bb9797d14 100644
--- a/ee/lib/ee/api/entities/vulnerability.rb
+++ b/ee/lib/ee/api/entities/vulnerability.rb
@@ -31,10 +31,13 @@ class Vulnerability < Grape::Entity
 
         expose :created_at
         expose :updated_at
-        expose :last_edited_at
         expose :resolved_at
         expose :dismissed_at
         expose :confirmed_at
+
+        # This field is deprecated and always returns nil
+        # TODO remove with https://gitlab.com/gitlab-org/gitlab/-/work_items/431990
+        expose(:last_edited_at) { |_settings, _options| nil }
       end
     end
   end
diff --git a/ee/spec/lib/ee/api/entities/vulnerability_spec.rb b/ee/spec/lib/ee/api/entities/vulnerability_spec.rb
index e712f517eeafe96b43f6514023f0dcb54d818800..e96cdbeee4ad6487d2658e93f808968d2a0714ad 100644
--- a/ee/spec/lib/ee/api/entities/vulnerability_spec.rb
+++ b/ee/spec/lib/ee/api/entities/vulnerability_spec.rb
@@ -41,7 +41,6 @@
 
     expect(subject[:created_at]).to eq(vulnerability.created_at)
     expect(subject[:updated_at]).to eq(vulnerability.updated_at)
-    expect(subject[:last_edited_at]).to eq(vulnerability.last_edited_at)
     expect(subject[:resolved_at]).to eq(vulnerability.resolved_at)
     expect(subject[:dismissed_at]).to eq(vulnerability.dismissed_at)
     expect(subject[:confirmed_at]).to eq(vulnerability.confirmed_at)