diff --git a/src/cachetools/__init__.py b/src/cachetools/__init__.py
index 1be3933..2d2e2cf 100644
--- a/src/cachetools/__init__.py
+++ b/src/cachetools/__init__.py
@@ -13,7 +13,7 @@
     "cachedmethod",
 )
 
-__version__ = "5.4.0"
+__version__ = "5.5.0"
 
 import collections
 import collections.abc