diff --git a/requirements.txt b/requirements.txt
index c2d70487..25336469 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ statsmodels==0.14.5
 pytest==8.4.1
 pytest-cov==6.2.1
 zarr==2.18.4
-ruff==0.8.6
+ruff==0.12.9
 netcdf4==1.7.2
 h5netcdf==1.6.1
 impactlab-tools==0.6.0