diff --git a/requirements-doc.txt b/requirements-doc.txt
index 74fea77d..c4b67f7a 100644
--- a/requirements-doc.txt
+++ b/requirements-doc.txt
@@ -11,7 +11,7 @@ PyWavelets
 spgl1
 scikit-fmm
 sympy
-devito
+devito==4.8.6
 dtcwt
 matplotlib
 ipython