diff --git a/x-pack/plugins/security_solution/common/experimental_features.ts b/x-pack/plugins/security_solution/common/experimental_features.ts
index fe65aab259395..cb1b6778884ea 100644
--- a/x-pack/plugins/security_solution/common/experimental_features.ts
+++ b/x-pack/plugins/security_solution/common/experimental_features.ts
@@ -59,6 +59,16 @@ export const allowedExperimentalValues = Object.freeze({
    * Enables the detection response actions in rule + alerts
    */
   responseActionsEnabled: true,
+
+  /**
+   * Keep DEPRECATED experimental flags that are documented to prevent failed upgrades.
+   * https://www.elastic.co/guide/en/security/current/user-risk-score.html
+   * https://www.elastic.co/guide/en/security/current/host-risk-score.html
+   *
+   * Issue: https://github.com/elastic/kibana/issues/146777
+   */
+  riskyHostsEnabled: false, // DEPRECATED
+  riskyUsersEnabled: false, // DEPRECATED
 });
 
 type ExperimentalConfigKeys = Array<keyof ExperimentalFeatures>;