diff --git a/jupyter_client/blocking/client.py b/jupyter_client/blocking/client.py
index 5c815eb8..6ddaab5f 100644
--- a/jupyter_client/blocking/client.py
+++ b/jupyter_client/blocking/client.py
@@ -57,6 +57,7 @@ class BlockingKernelClient(KernelClient):
     _recv_reply = run_sync(KernelClient._async_recv_reply)
 
     # replies come on the shell channel
+    fork = reqrep(wrapped, KernelClient.fork)
     execute = reqrep(wrapped, KernelClient.execute)
     history = reqrep(wrapped, KernelClient.history)
     complete = reqrep(wrapped, KernelClient.complete)
diff --git a/jupyter_client/client.py b/jupyter_client/client.py
index 851a2345..6f6c8951 100644
--- a/jupyter_client/client.py
+++ b/jupyter_client/client.py
@@ -644,6 +644,12 @@ def execute(
         self.shell_channel.send(msg)
         return msg["header"]["msg_id"]
 
+    def fork(self):
+        content = {}
+        msg = self.session.msg("fork", content)
+        self.shell_channel.send(msg)
+        return msg["header"]["msg_id"]
+
     def complete(self, code: str, cursor_pos: t.Optional[int] = None) -> str:
         """Tab complete text in the kernel's namespace.