diff --git a/requirements.txt b/requirements.txt
index 00c02daa..629f5da2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ statsmodels==0.14.2
 pytest==8.3.2
 pytest-cov==5.0.0
 zarr==2.18.2
-ruff==0.6.2
+ruff==0.6.3
 netcdf4==1.7.0
 h5netcdf==1.3.0
 impactlab-tools==0.6.0