diff --git a/requirements.txt b/requirements.txt
index 08b15fc6..94a1ac45 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-ladybug-core==0.42.30
+ladybug-core==0.42.31
 ladybug-geometry-polyskel==1.4.45
 honeybee-schema==1.58.0;python_version>='3.7'