diff --git a/lib/src/analysis/nas_null_cipher.rs b/lib/src/analysis/nas_null_cipher.rs
index 64d29bf..76cc15d 100644
--- a/lib/src/analysis/nas_null_cipher.rs
+++ b/lib/src/analysis/nas_null_cipher.rs
@@ -1,8 +1,8 @@
 use std::borrow::Cow;
 
+use pycrate_rs::nas::NASMessage;
 use pycrate_rs::nas::emm::EMMMessage;
 use pycrate_rs::nas::generated::emm::emm_security_mode_command::NASSecAlgoCiphAlgo::EPSEncryptionAlgorithmEEA0Null;
-use pycrate_rs::nas::NASMessage;
 
 use super::analyzer::{Analyzer, Event, EventType, Severity};
 use super::information_element::{InformationElement, LteInformationElement};
@@ -34,6 +34,10 @@ impl Analyzer for NasNullCipherAnalyzer {
         )
     }
 
+    fn get_version(&self) -> u32 {
+        1
+    }
+
     fn analyze_information_element(&mut self, ie: &InformationElement) -> Option<Event> {
         self.packet_num += 1;
         let payload = match ie {