diff --git a/requirements.txt b/requirements.txt
index f5dd49b..f1fb601 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-ladybug-comfort==0.18.37
+ladybug-comfort==0.18.39
 ladybug-radiance==0.2.10
 ladybug-display==0.11.2