diff --git a/doc/requirements.txt b/doc/requirements.txt
index 6cb21c62..212cb736 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,7 @@ entrypoints==0.4
 Pillow==10.2.0
 Sphinx==7.2.6
 furo==2024.1.29
-ipython==8.20.0
+ipython==8.21.0
 netCDF4==1.6.5
 xarray==2024.1.1
 matplotlib==3.8.2