diff --git a/requirements.txt b/requirements.txt
index fe9a27851..d30e99787 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,6 @@
+# python 3.13
+
 docutils==0.19.0
 Pygments==2.19.2
 Sphinx==5.3.0
+standard-imghdr==3.13.0