diff --git a/requirements.txt b/requirements.txt
index 7bfd6563c4..3fbb08b807 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 beartype<0.20.0
 dill<0.3.10
-fastkde>=1.0.24, <1.0.31
+fastkde>=1.0.24, <2.1.4
 graph-scheduler>=1.2.1, <1.3.0
 graphviz<0.21.0
 grpcio<1.67.0