diff --git a/doc/reference/configuration/configuration_reference.rst b/doc/reference/configuration/configuration_reference.rst
index 97ee00e65..ea6b19de2 100644
--- a/doc/reference/configuration/configuration_reference.rst
+++ b/doc/reference/configuration/configuration_reference.rst
@@ -540,6 +540,7 @@ If :ref:`replication.failover <configuration_reference_replication_failover>` is
 * :ref:`config.etcd.password <config_etcd_password>`
 * :ref:`config.etcd.ssl.ca_file <config_etcd_ssl_ca_file>`
 * :ref:`config.etcd.ssl.ca_path <config_etcd_ssl_ca_path>`
+* :ref:`config.etcd.ssl.ssl_cert <config_etcd_ssl_ssl_cert>`
 * :ref:`config.etcd.ssl.ssl_key <config_etcd_ssl_ssl_key>`
 * :ref:`config.etcd.ssl.verify_host <config_etcd_ssl_verify_host>`
 * :ref:`config.etcd.ssl.verify_peer <config_etcd_ssl_verify_peer>`
@@ -624,6 +625,17 @@ If :ref:`replication.failover <configuration_reference_replication_failover>` is
 
 .. _config_etcd_ssl_ssl_key:
 
+.. confval:: config.etcd.ssl.ssl_cert
+
+    A path to an SSL certificate file.
+
+    |
+    | Type: string
+    | Default: nil
+    | Environment variable: TT_CONFIG_ETCD_SSL_SSL_CERT
+
+.. _config_etcd_ssl_ssl_key:
+
 .. confval:: config.etcd.ssl.ssl_key
 
     A path to a private SSL key file.