diff --git a/requirements.txt b/requirements.txt
index 9f990e91..b2b36ec2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ pillow==11.1.0
 iso8601==2.1.0
 
 # used by indexosm
-rtree==1.4.0
+rtree==1.4.1
 
 # linter and formatter
 ruff==0.11.6