diff --git a/_config b/_config
index 8a82e58..1c6648d 100644
--- a/_config
+++ b/_config
@@ -433,6 +433,7 @@ Prefer: opencv-devel
 # python2-pytest4 should win over python2-pytest
 # python3-pytest should win over python3-pytest4 since pytest5 is python3 only
 Prefer: python2-pytest4 python3-pytest
+Prefer: -python3-pytest3
 
 # There is python3-Django and python3-Django1 - as usual, we favor the unversioned one
 Prefer: python3-Django