diff --git a/src/content/_includes/docs/iot-gateway/config/general.mdx b/src/content/_includes/docs/iot-gateway/config/general.mdx
index 4ee5f81bd0..d15560f45d 100644
--- a/src/content/_includes/docs/iot-gateway/config/general.mdx
+++ b/src/content/_includes/docs/iot-gateway/config/general.mdx
@@ -67,6 +67,7 @@ Full list of supported variables:
 |----------|---------|-------------|
 | `TB_GW_HOST` | `host.docker.internal` | Hostname or IP address of ThingsBoard server |
 | `TB_GW_PORT` | `1883` | MQTT service port on ThingsBoard server |
+| `TB_GW_SECURITY_TYPE` | `accessToken` | Security type: `accessToken`, `usernamePassword`, `tlsAccessToken` |
 | `TB_GW_ACCESS_TOKEN` | — | Access token for the gateway |
 | `TB_GW_CA_CERT` | — | Path to CA certificate file |
 | `TB_GW_PRIVATE_KEY` | — | Path to private key file |
diff --git a/src/content/_includes/docs/iot-gateway/config/modbus.mdx b/src/content/_includes/docs/iot-gateway/config/modbus.mdx
index 5d86670683..a04b874fdb 100644
--- a/src/content/_includes/docs/iot-gateway/config/modbus.mdx
+++ b/src/content/_includes/docs/iot-gateway/config/modbus.mdx
@@ -1799,7 +1799,8 @@ Example of the serial slave configuration:
 | server.slaves[].attributes[].type          | [Data type](/docs/iot-gateway/config/modbus/#data-types) of value.                                                                                                 |
 | server.slaves[].attributes[].functionCode  | [Function code](/docs/iot-gateway/config/modbus/#modbus-functions) to use for reading the attribute value from the Modbus slave.                                   |
 | server.slaves[].attributes[].objectsCount  | Number of objects to read from the Modbus slave.                                                                                                                   |
-| server.slaves[].attributes[].address       | Address of the object in the Modbus slave. Can be configured for [batch reading](/docs/iot-gateway/config/modbus/#usage-examples). |
+| server.slaves[].attributes[].address       | Address of the object in the Modbus slave. Can be configured for [batch reading](/docs/iot-gateway/config/modbus/#usage-examples).                                 |
+| server.slaves[].attributes[].maxRegistersPerRequest | (Optional) Maximum number of registers to read in a single request. If not specified, the default value is 16. Can be used only with [batch reading](/docs/iot-gateway/config/modbus/#usage-examples) feature. |
 | server.slaves[].attributes[].divider       | (Optional) Divider for the value. If not specified, the value will be sent as is.                                                                                  |
 | server.slaves[].attributes[].multiplier    | (Optional) Multiplier for the value. If not specified, the value will be sent as is.                                                                               |
 | server.slaves[].attributes[].bitTargetType | The response type can be either an integer (0/1) or a boolean (True/False). **Used only with type `bits`**.                                                        |
@@ -1810,6 +1811,7 @@ Example of the serial slave configuration:
 | server.slaves[].timeseries[].functionCode  | [Function code](/docs/iot-gateway/config/modbus/#modbus-functions) to use for reading the time series value from the Modbus slave.                                 |
 | server.slaves[].timeseries[].objectsCount  | Number of objects to read from the Modbus slave.                                                                                                                   |
 | server.slaves[].timeseries[].address       | Address of the object in the Modbus slave. Can be configured for [batch reading](/docs/iot-gateway/config/modbus/#usage-examples). |
+| server.slaves[].timeseries[].maxRegistersPerRequest | (Optional) Maximum number of registers to read in a single request. If not specified, the default value is 16. Can be used only with [batch reading](/docs/iot-gateway/config/modbus/#usage-examples) feature. |
 | server.slaves[].timeseries[].divider       | (Optional) Divider for the value. If not specified, the value will be sent as is.                                                                                  |
 | server.slaves[].timeseries[].multiplier    | (Optional) Multiplier for the value. If not specified, the value will be sent as is.                                                                               |
 | server.slaves[].timeseries[].bitTargetType | The response type can be either an integer (0/1) or a boolean (True/False). **Used only with type `bits`**.                                                        |