diff --git a/requirements.txt b/requirements.txt
index 0221096d..3b1c9cc2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-dragonfly-core==1.41.39
+dragonfly-core==1.41.40
 honeybee-energy==1.100.23