diff --git a/docs/public-networks/reference/genesis-items.md b/docs/public-networks/reference/genesis-items.md
index a837fc24a4a..4cc0a81bbf3 100644
--- a/docs/public-networks/reference/genesis-items.md
+++ b/docs/public-networks/reference/genesis-items.md
@@ -29,6 +29,7 @@ Network configuration items are specified in the genesis file in the `config` ob
 | `ecCurve`           | Specifies [the elliptic curve to use](../../private-networks/how-to/configure/curves.md). Default is `secp256k1`.                                                                                                 |
 | `discovery`         | Specifies [discovery configuration items](#discovery-configuration-items). The `discovery` object can be left empty.                                                                                              |
 | `zeroBaseFee`       | Specifies a base fee of `0` for [free gas networks](../../private-networks/how-to/configure/free-gas.md#4-enable-zero-base-fee-if-using-london-fork-or-later).                                                      |
+| `fixedBaseFee`      | Specifies a constant base fee for blocks, overriding the dynamic base fee calculation of [EIP-1559](../concepts/transactions/types#eip1559-transactions).  |
 
 ## Genesis block parameters
 
@@ -145,4 +146,4 @@ Use the `discovery` configuration items to specify the [`bootnodes`](cli/options
     }
   }
 }
-```
\ No newline at end of file
+```