diff --git a/requirements.txt b/requirements.txt
index 2bc0ce25..556cc677 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,5 +14,5 @@ netcdf4==1.7.2
 h5netcdf==1.6.4
 impactlab-tools==0.6.0
 p_tqdm==1.4.2
-pyarrow==19.0.1
+pyarrow==21.0.0
 numcodecs==0.15.1