diff --git a/upgrading/topics/migrate_themes.adoc b/upgrading/topics/migrate_themes.adoc
index bc05170fd4..00c3b78192 100644
--- a/upgrading/topics/migrate_themes.adoc
+++ b/upgrading/topics/migrate_themes.adoc
@@ -19,6 +19,7 @@ In summary:
 ifeval::[{project_product}==true]
 Each step is described in more detail below the list of changes.
 
+include::rhsso/migrate_themes-changes-73.adoc[leveloffset=0]
 include::rhsso/migrate_themes-changes-72.adoc[leveloffset=0]
 include::rhsso/migrate_themes-changes-71.adoc[leveloffset=0]
 endif::[]
diff --git a/upgrading/topics/rhsso/migrate_themes-changes-73.adoc b/upgrading/topics/rhsso/migrate_themes-changes-73.adoc
new file mode 100644
index 0000000000..9eb99feda9
--- /dev/null
+++ b/upgrading/topics/rhsso/migrate_themes-changes-73.adoc
@@ -0,0 +1,59 @@
+===== Theme changes RH-SSO 7.3
+
+**Templates**
+
+* Account: account.ftl
+* Account: applications.ftl
+* Account: resource-detail.ftl (new)
+* Account: resources.ftl (new)
+* Account: template.ftl
+* Account: totp.ftl
+* Email-html: email-test.ftl
+* Email-html: email-verification-with-code.ftl (new)
+* Email-html: email-verification.ftl
+* Email-html: event-login_error.ftl
+* Email-html: event-removed_totp.ftl
+* Email-html: event-update_password.ftl
+* Email-html: event-update_totp.ftl
+* Email-html: executeActions.ftl
+* Email-html: identity-provider-link.ftl
+* Email-html: password-reset.ftl
+* Email-text: email-verification-with-code.ftl (new)
+* Email-text: email-verification.ftl
+* Email-text: executeActions.ftl
+* Email-text: identity-provider-link.ftl
+* Email-text: password-reset.ftl
+* Login: cli_splash.ftl (new)
+* Login: code.ftl
+* Login: error.ftl
+* Login: info.ftl
+* Login: login-config-totp-text.ftl (new)
+* Login: login-config-totp.ftl
+* Login: login-idp-link-confirm.ftl
+* Login: login-idp-link-email.ftl
+* Login: login-oauth-grant.ftl
+* Login: login-page-expired.ftl
+* Login: login-reset-password.ftl
+* Login: login-totp.ftl
+* Login: login-update-password.ftl
+* Login: login-update-profile.ftl
+* Login: login-verify-email-code-text.ftl (new)
+* Login: login-verify-email.ftl
+* Login: login-x509-info.ftl
+* Login: login.ftl
+* Login: register.ftl
+* Login: template.ftl
+* Login: terms.ftl
+* Welcome: index.ftl (new)
+
+**Messages**
+
+* Account: messages_en.properties
+* Admin: admin-messages_en.properties
+* Email: messages_en.properties
+* Login: messages_en.properties 
+
+**Styles**
+
+* Login: login-rhsso.css (new)
+* Welcome: welcome-rhsso.css