diff --git a/doc/requirements.txt b/doc/requirements.txt
index 291c479e9..c0f9a89bd 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -8,5 +8,5 @@ matplotlib
 pillow
 pandas
 setuptools
-mne-nirs
+https://github.com/mne-tools/mne-nirs/zipball/main
 seaborn