diff --git a/component/sniffing/sniffer.go b/component/sniffing/sniffer.go
index 97a2311..d1d3c5a 100644
--- a/component/sniffing/sniffer.go
+++ b/component/sniffing/sniffer.go
@@ -82,10 +82,14 @@ func (s *Sniffer) SniffTcp() (d string, err error) {
 	defer s.readMu.Unlock()
 	if s.stream {
 		go func() {
-			_, err := s.buf.ReadFrom(s.r)
+			// Read once.
+			s.buf.Reset()
+			s.buf.Grow(max(0, 4096-s.buf.Available()))
+			n, err := s.r.Read(s.buf.AvailableBuffer())
 			if err != nil {
 				s.dataError = err
 			}
+			s.buf.Truncate(n)
 			close(s.dataReady)
 		}()
 
diff --git a/go.mod b/go.mod
index 1227992..6ad19ee 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/daeuniverse/dae
 
-go 1.20
+go 1.21
 
 require (
 	github.com/adrg/xdg v0.4.0