diff --git a/docs/requirements.txt b/docs/requirements.txt
index 3acc44f..44024c1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-docutils>=0.16
+docutils<0.18
 tifffile==2020.2.16
 opencv-python>4.2.0
 cython>=0.29.19