diff --git a/requirements.txt b/requirements.txt
index 7fb66b1..f6e8963 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-asn1tools 
+asn1tools==0.146.6
 scapy
-impacket
+impacket==0.9.24