diff --git a/requirements.txt b/requirements.txt
index efa8372..be59409 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 asn1==2.6.0
-pyasn1==0.4.8
-pyasn1-modules==0.2.8
-pygost==5.11
\ No newline at end of file
+pyderasn==9.3
+pygost==5.11