diff --git a/requirements.txt b/requirements.txt
index e9e3817..fb41186 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-pycryptodomex==3.9.4
+pycryptodomex<=3.9.4
 events==0.3
 pyctr==0.1.0