diff --git a/pubspec.yaml b/pubspec.yaml
index ceb2250..a0fa78d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -7,7 +7,7 @@ environment:
   sdk: '>=2.7.0 <3.0.0'
 
 dependencies:
-  asn1lib: '^0.5.14'
+  asn1lib: ^0.6.4
   pointycastle: '^1.0.2'
   tuple: '^1.0.1'