diff --git a/app/views/devise/mailer/email_changed.html.haml b/app/views/devise/mailer/email_changed.html.haml
new file mode 100644
index 0000000000000000000000000000000000000000..5398430fdfd83f3532b5233673009800db9630ee
--- /dev/null
+++ b/app/views/devise/mailer/email_changed.html.haml
@@ -0,0 +1,12 @@
+= email_default_heading("Hello, #{@resource.name}!")
+
+- if @resource.try(:unconfirmed_email?)
+  %p
+    We're contacting you to notify you that your email is being changed to #{@resource.reload.unconfirmed_email}.
+- else
+  %p
+    We're contacting you to notify you that your email has been changed to #{@resource.email}.
+
+%p
+  If you did not initiate this change, please contact your administrator
+  immediately.
diff --git a/app/views/devise/mailer/email_changed.text.erb b/app/views/devise/mailer/email_changed.text.erb
new file mode 100644
index 0000000000000000000000000000000000000000..18137389e7b68a510a108303414421a78069525b
--- /dev/null
+++ b/app/views/devise/mailer/email_changed.text.erb
@@ -0,0 +1,10 @@
+Hello, <%= @resource.name %>!
+
+<% if @resource.try(:unconfirmed_email?) %>
+We're contacting you to notify you that your email is being changed to <%= @resource.reload.unconfirmed_email %>.
+<% else %>
+We're contacting you to notify you that your email has been changed to <%= @resource.email %>.
+<% end %>
+
+If you did not initiate this change, please contact your administrator
+immediately.
diff --git a/changelogs/unreleased/security-email-change-notification.yml b/changelogs/unreleased/security-email-change-notification.yml
new file mode 100644
index 0000000000000000000000000000000000000000..45075ff20bb5aa50efa3ce7c2067f170c186f321
--- /dev/null
+++ b/changelogs/unreleased/security-email-change-notification.yml
@@ -0,0 +1,5 @@
+---
+title: Provide email notification when a user changes their email address
+merge_request:
+author:
+type: security
diff --git a/config/initializers/devise.rb b/config/initializers/devise.rb
index 179e00cdbd0962133a570b804a693d3a095b4f7a..67eabb0b4fccd577ba4ebac31bbdd609d6972fe2 100644
--- a/config/initializers/devise.rb
+++ b/config/initializers/devise.rb
@@ -103,6 +103,9 @@ Devise.setup do |config|
   # Send a notification email when the user's password is changed
   config.send_password_change_notification = true
 
+  # Send a notification email when the user's email is changed
+  config.send_email_changed_notification = true
+
   # ==> Configuration for :validatable
   # Range for password length. Default is 6..128.
   config.password_length = 8..128
diff --git a/doc/workflow/notifications.md b/doc/workflow/notifications.md
index c590ac4b0ba212749bc9759663e20d11ceb07e78..020aa73f80908281b30b5a4fccd7d68a034ad511 100644
--- a/doc/workflow/notifications.md
+++ b/doc/workflow/notifications.md
@@ -64,6 +64,8 @@ Below is the table of events users can be notified of:
 |------------------------------|-------------------------------------------------------------------|------------------------------|
 | New SSH key added            | User                                                              | Security email, always sent. |
 | New email added              | User                                                              | Security email, always sent. |
+| Email changed                | User                                                              | Security email, always sent. |
+| Password changed             | User                                                              | Security email, always sent. |
 | New user created             | User                                                              | Sent on user creation, except for omniauth (LDAP)|
 | User added to project        | User                                                              | Sent when user is added to project |
 | Project access level changed | User                                                              | Sent when user project access level is changed |