diff --git a/requirements.txt b/requirements.txt
index 6a36708..927c859 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 pycryptodomex==3.9.8
 events==0.3
-pyctr==0.4.2
+pyctr==0.4.3