diff --git a/src/core/server/http/ssl_config.ts b/src/core/server/http/ssl_config.ts
index 59b0747e5b0ba..c32b94cf26def 100644
--- a/src/core/server/http/ssl_config.ts
+++ b/src/core/server/http/ssl_config.ts
@@ -49,6 +49,7 @@ export const sslSchema = schema.object(
       schema.oneOf([schema.literal('TLSv1'), schema.literal('TLSv1.1'), schema.literal('TLSv1.2')]),
       { defaultValue: ['TLSv1.1', 'TLSv1.2'], minSize: 1 }
     ),
+    requestCert: schema.maybe(schema.boolean({ defaultValue: false })),
   },
   {
     validate: ssl => {
@@ -85,6 +86,7 @@ export class SslConfig {
     this.keyPassphrase = config.keyPassphrase;
     this.cipherSuites = config.cipherSuites;
     this.supportedProtocols = config.supportedProtocols;
+    this.requestCert = config.requestCert;
   }
 
   /**