diff --git a/src/ecutils/settings.py b/src/ecutils/settings.py
index 32fcfe4..4098b9e 100644
--- a/src/ecutils/settings.py
+++ b/src/ecutils/settings.py
@@ -1,4 +1,4 @@
 import os
 
 # Default value for LRU cache maxsize
-LRU_CACHE_MAXSIZE = os.environ.get("LRU_CACHE_MAXSIZE", 1024)
+LRU_CACHE_MAXSIZE: int = int(os.environ.get("LRU_CACHE_MAXSIZE", 1024))