diff --git a/lib/nntp/tiny/client.py b/lib/nntp/tiny/client.py
index 21814bf..55c0984 100644
--- a/lib/nntp/tiny/client.py
+++ b/lib/nntp/tiny/client.py
@@ -78,11 +78,11 @@ class Client(Connection):
 
             yield line
 
-    def each_newsgroup(self, wildmat: str, timestamp: datetime.datetime):
+    def each_newsgroup_since(self, timestamp: datetime.datetime):
         date = timestamp.strftime('%Y%m%d')
         time = timestamp.strftime('%H%M%S')
 
-        response = self.request('NEWGROUPS', wildmat, date, time)
+        response = self.request('NEWGROUPS', date, time)
 
         for line in self.each_response_line():
             parts = self.RE_SPLIT.split(line)