diff --git a/go.mod b/go.mod
index c86689a0f99adeb5b858f88b2e5e2ef497e0427c..8661fdbce1975ee72e6a902505b4caad1502acfc 100644
--- a/go.mod
+++ b/go.mod
@@ -22,7 +22,7 @@ require (
 	github.com/russross/blackfriday/v2 v2.1.0
 	github.com/theckman/go-flock v0.8.1
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.34.0
-	go.opentelemetry.io/contrib/propagators/b3 v1.9.0
+	go.opentelemetry.io/contrib/propagators/b3 v1.21.0
 	go.opentelemetry.io/otel v1.10.0
 	go.opentelemetry.io/otel/exporters/zipkin v1.9.0
 	go.opentelemetry.io/otel/sdk v1.10.0