diff --git a/requirements.txt b/requirements.txt
index 7ff98d6..778aa56 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ jsonschema ==4.23.0
 ops ==2.16.1
 pydantic ==1.10.18
 requests ==2.32.3
-cosl ==0.0.39
+cosl ==0.0.40