diff --git a/go.mod b/go.mod
index eaf9d04..1cb75fa 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.26.3
 require (
 	github.com/eclipse/paho.mqtt.golang v1.5.1
 	github.com/emiago/diago v0.28.0
-	github.com/emiago/sipgo v1.3.1
+	github.com/emiago/sipgo v1.4.0
 	github.com/expr-lang/expr v1.17.8
 	github.com/extism/go-sdk v1.7.1
 	github.com/google/jsonschema-go v0.4.3
diff --git a/go.sum b/go.sum
index 58eb75f..6862944 100644
--- a/go.sum
+++ b/go.sum
@@ -18,8 +18,8 @@ github.com/emiago/diago v0.28.0 h1:VCiimhFYLoBTsxH6WrufLSt6tKWG8Fv7LfCkZHqct2E=
 github.com/emiago/diago v0.28.0/go.mod h1:eQT6j9co9PMQ/25aUiM2jpvwxxWFXLWi2w5R3lZNmKg=
 github.com/emiago/dtls/v3 v3.0.0-20260122183559-8b8d23e359c0 h1:o4LxpUnZ1zxiQ+Qjc9kLwXcjz31NGAHmnZ7xoJto3VM=
 github.com/emiago/dtls/v3 v3.0.0-20260122183559-8b8d23e359c0/go.mod h1:ydcZ977eS1I6uOWodzMuw30BwvNAzT9su/xcNYSJqjA=
-github.com/emiago/sipgo v1.3.1 h1:JwcmYJtCmcjuLwB2ZxtupYilNQgwXN/JIcxp+CDq16A=
-github.com/emiago/sipgo v1.3.1/go.mod h1:DuwAxBZhKMqIzQFPGZb1MVAGU6Wuxj64oTOhd5dx/FY=
+github.com/emiago/sipgo v1.4.0 h1:IRiwIUu4H97gC+vq2zsm3iWe/j08LPExFZRe3kfY0f0=
+github.com/emiago/sipgo v1.4.0/go.mod h1:DuwAxBZhKMqIzQFPGZb1MVAGU6Wuxj64oTOhd5dx/FY=
 github.com/expr-lang/expr v1.17.8 h1:W1loDTT+0PQf5YteHSTpju2qfUfNoBt4yw9+wOEU9VM=
 github.com/expr-lang/expr v1.17.8/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
 github.com/extism/go-sdk v1.7.1 h1:lWJos6uY+tRFdlIHR+SJjwFDApY7OypS/2nMhiVQ9Sw=