diff --git a/docs/sphinx/requirements.txt b/docs/sphinx/requirements.txt
index 0b5c44aa0a..8002fdf72a 100644
--- a/docs/sphinx/requirements.txt
+++ b/docs/sphinx/requirements.txt
@@ -140,6 +140,8 @@ parso==0.8.5
     # via jedi
 pexpect==4.9.0
     # via ipython
+pillow==11.3.0
+    # via matplotlib
 platformdirs==4.5.1
     # via jupyter-core
 prompt-toolkit==3.0.52