diff --git a/requirements/voice.txt b/requirements/voice.txt
index 6382712eac..c6da5e1f42 100644
--- a/requirements/voice.txt
+++ b/requirements/voice.txt
@@ -1 +1 @@
-PyNaCl>=1.3.0,<1.6
+PyNaCl>=1.6,<1.7