diff --git a/docs/readme.eng.md b/docs/readme.eng.md
index 551e17f..c3e1695 100644
--- a/docs/readme.eng.md
+++ b/docs/readme.eng.md
@@ -120,6 +120,9 @@ nf sets do not support overlapping intervals and that's why nft process applies
 There're equivalents to iptables for all other functions. Interface and protocol anonymous sets allow not to write multiple similar rules.
 Flow offloading is built-in into new linux kernels and nft versions.
 
+Zapret scripts are written for `nft 0.9.4` and higher. Older versions will fail.
+`nft 1.0.2` is recommended.
+
 
 ## When it will not work