diff --git a/paperless/init.sls b/paperless/init.sls
index f99e17b..7ed21a4 100644
--- a/paperless/init.sls
+++ b/paperless/init.sls
@@ -35,6 +35,7 @@ docker-requirements:
     - require:
       - pkg: python3-pip
     - pkgs:
+      - cython<3.0.0
       # - docker==6.1.3
       # - docker==7.0.0
       - docker==7.1.0