diff --git a/requirements.txt b/requirements.txt
index e9f04088..1354bbb2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-ladybug-core==0.43.3
+ladybug-core==0.43.4
 ladybug-geometry-polyskel==1.7.2
 honeybee-schema==1.58.3;python_version>='3.7'