diff --git a/parliament/__init__.py b/parliament/__init__.py
index b24162e..c9f46cf 100644
--- a/parliament/__init__.py
+++ b/parliament/__init__.py
@@ -229,7 +229,7 @@ def is_glob_match(s1, s2):
     return s1[0] == s2[0] and is_glob_match(s1[1:], s2[1:])
 
 
-@functools.lru_cache(maxsize=1024)
+@functools.lru_cache(maxsize=10240)
 def expand_action(action, raise_exceptions=True):
     """
     Converts "iam:*List*" to