diff --git a/lib/index.js b/lib/index.js
index 192a316..a0e28ae 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -284,7 +284,8 @@ RpcClient.callspec = {
   setGenerate: 'bool int',
   setTxFee: 'float',
   setMockTime: 'int',
-  spork: 'str int',
+  spork: 'str',
+  sporkupdate: 'str int',
   signMessage: 'str str',
   signRawTransaction: 'str str str str',
   stop: '',