diff --git a/doc/requirements.txt b/doc/requirements.txt
index 33b57c5c2..12c14289d 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,7 @@ entrypoints==0.4
 Sphinx==5.2.3
 sphinx-rtd-theme==1.0.0
 ipython==8.10.0
-netCDF4==1.6.3
+netCDF4==1.6.4
 xarray==2023.1.0
 matplotlib==3.7.1
 seaborn==0.12.2
\ No newline at end of file