diff --git a/app/controllers/edits_controller.rb b/app/controllers/edits_controller.rb
index 3b2388c7f..2087d5f8f 100644
--- a/app/controllers/edits_controller.rb
+++ b/app/controllers/edits_controller.rb
@@ -3,6 +3,7 @@
 class EditsController < SettingsController
   helper ProjectsHelper
 
+  before_action { response.set_header('X-Robots-Tag', 'noindex, nofollow') }
   before_action :session_required, :redirect_unverified_account, only: [:update]
   before_action :find_parent, only: %i[index show update refresh]
   before_action :show_permissions_alert, only: :index, unless: :parent_is_account_or_license?
diff --git a/app/controllers/permissions_controller.rb b/app/controllers/permissions_controller.rb
index 7ffd8dfea..cd73cdf90 100644
--- a/app/controllers/permissions_controller.rb
+++ b/app/controllers/permissions_controller.rb
@@ -4,6 +4,7 @@ class PermissionsController < ApplicationController
   helper ProjectsHelper
   include ProjectOrOrganizationSetter
 
+  before_action { response.set_header('X-Robots-Tag', 'noindex, nofollow') }
   before_action :session_required, :redirect_unverified_account, only: :update
   before_action :find_model
   before_action :require_manage_authorization, only: :update
diff --git a/app/controllers/session_projects_controller.rb b/app/controllers/session_projects_controller.rb
index 3401a2188..458880a27 100644
--- a/app/controllers/session_projects_controller.rb
+++ b/app/controllers/session_projects_controller.rb
@@ -2,6 +2,7 @@
 
 class SessionProjectsController < ApplicationController
   skip_before_action :store_location
+  before_action { response.set_header('X-Robots-Tag', 'noindex, nofollow') }
   before_action :prevent_bot_access
   before_action :set_project, only: :create
   before_action :set_session_projects
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index c1d74211c..6b0eac789 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -3,6 +3,7 @@
 class SessionsController < Clearance::SessionsController
   helper StatsdHelper
 
+  before_action { response.set_header('X-Robots-Tag', 'noindex, nofollow') }
   before_action :account_must_exist, only: :create
   before_action :captcha_verify, only: :create, if: :failed_login_thrice?
   before_action :reset_auth_fail_count, only: :create, if: :auth_failure_timeout?
diff --git a/public/robots.txt b/public/robots.txt
index 4d73a02c9..cb9323af2 100644
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -1,17 +1,10 @@
 User-agent: *
-Disallow: /accounts/*/near
 Disallow: /images/
 Disallow: /images
-Disallow: /edits/
-Disallow: /edits
-Disallow: /*/edits
-Disallow: /*/edits/*
 Disallow: /*/commits/*
 Disallow: /*/contributors/*.png
 Disallow: /*/positions/*.png
-Disallow: /p/*/permissions
 Disallow: /p/*/stacks/near
-Disallow: /sessions/new
 Disallow: /p/*/contributors/*
 Disallow: /p/*/contributors/*/commits
 Disallow: /p?
@@ -19,7 +12,6 @@ Disallow: /people?
 Disallow: /people/rankings?
 Disallow: /search
 Disallow: /p/*/factoids/*
-Disallow: /session_projects
 Crawl-Delay: 10
 
 User-agent: discobot
@@ -43,4 +35,4 @@ Disallow: /
 User-agent: AhrefsBot
 Crawl-Delay: 10 # No faster than ever 10 seconds
 
-Sitemap: http://www.openhub.net/sitemap_index.xml
+Sitemap: https://www.openhub.net/sitemap_index.xml