diff --git a/pubspec.yaml b/pubspec.yaml
index eaebfdb..024c99e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,13 +1,16 @@
 name: x509b
 description: Dart library for parsing and working with X.509 certificates.
-version: 0.2.5
+version: 0.2.6
 homepage: https://github.com/jeroentrappers/x509
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
-  asn1lib: ^1.0.0
+  asn1lib:
+    git:
+      url: https://github.com/jeroentrappers/asn1lib
+      ref: 1.0.4
   quiver: ^3.0.0
   crypto_keys: '>=0.2.0 <0.4.0'