diff --git a/faststreams.nimble b/faststreams.nimble
index 7dfaa0a..0db63e4 100644
--- a/faststreams.nimble
+++ b/faststreams.nimble
@@ -8,6 +8,7 @@ license       = "Apache License 2.0"
 skipDirs      = @["tests"]
 
 requires "nim >= 1.2.0",
+         "https://github.com/yyoncho/asynctools#non-blocking",
          "stew",
          "chronos",
          "unittest2"