diff --git a/requirements.txt b/requirements.txt
index f607d31..f06247a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ pandas==2.2.3
 scipy==1.14.1
 geopandas==1.0.1
 matplotlib==3.9.0
-Sphinx==7.3.7
+Sphinx==8.1.3
 sphinx-rtd-theme==2.0.0
 pytest==8.3.3
 pytest-cov==5.0.0