diff --git a/requirements.txt b/requirements.txt
index f18077f..15961b9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-nbtlib>=1.7.0,<1.9
+nbtlib>=1.7.0,<1.13
 numpy>=1.19.0,<1.20