diff --git a/hyperliquid/exchange.py b/hyperliquid/exchange.py
index 72f1a9bd..dba5da6b 100644
--- a/hyperliquid/exchange.py
+++ b/hyperliquid/exchange.py
@@ -1106,3 +1106,10 @@ def use_big_blocks(self, enable: bool) -> Any:
             signature,
             timestamp,
         )
+
+    def noop(self, nonce):
+        action = {"type": "noop"}
+        signature = sign_l1_action(
+            self.wallet, action, self.vault_address, nonce, self.expires_after, self.base_url == MAINNET_API_URL
+        )
+        return self._post_action(action, signature, nonce)
diff --git a/pyproject.toml b/pyproject.toml
index dc54326e..60b38106 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "hyperliquid-python-sdk"
-version = "0.17.0"
+version = "0.18.0"
 description = "SDK for Hyperliquid API trading with Python."
 readme = "README.md"
 authors = ["Hyperliquid <hello@hyperliquid.xyz>"]