diff --git a/dns/dnsmessage/message_test.go b/dns/dnsmessage/message_test.go
index e60ec42d9..255530598 100644
--- a/dns/dnsmessage/message_test.go
+++ b/dns/dnsmessage/message_test.go
@@ -1635,7 +1635,7 @@ func FuzzUnpackPack(f *testing.F) {
 
 		msgPacked, err := m.Pack()
 		if err != nil {
-			t.Fatalf("failed to pack message that was succesfully unpacked: %v", err)
+			t.Fatalf("failed to pack message that was successfully unpacked: %v", err)
 		}
 
 		var m2 Message
diff --git a/quic/rangeset.go b/quic/rangeset.go
index 4966a99d2..b8b2e9367 100644
--- a/quic/rangeset.go
+++ b/quic/rangeset.go
@@ -50,7 +50,7 @@ func (s *rangeset[T]) add(start, end T) {
 		if end <= r.end {
 			return
 		}
-		// Possibly coalesce subsquent ranges into range i.
+		// Possibly coalesce subsequent ranges into range i.
 		r.end = end
 		j := i + 1
 		for ; j < len(*s) && r.end >= (*s)[j].start; j++ {
diff --git a/quic/retry_test.go b/quic/retry_test.go
index 42f2bdd4a..c898ad331 100644
--- a/quic/retry_test.go
+++ b/quic/retry_test.go
@@ -521,7 +521,7 @@ func TestParseInvalidRetryPackets(t *testing.T) {
 	}} {
 		t.Run(test.name, func(t *testing.T) {
 			if _, ok := parseRetryPacket(test.pkt, originalDstConnID); ok {
-				t.Errorf("parseRetryPacket succeded, want failure")
+				t.Errorf("parseRetryPacket succeeded, want failure")
 			}
 		})
 	}
diff --git a/quic/stream_limits_test.go b/quic/stream_limits_test.go
index 9c2f71ec1..8fed825d7 100644
--- a/quic/stream_limits_test.go
+++ b/quic/stream_limits_test.go
@@ -249,7 +249,7 @@ func TestStreamLimitStopSendingDoesNotUpdateMaxStreams(t *testing.T) {
 	tc.writeFrames(packetType1RTT, debugFrameStopSending{
 		id: s.id,
 	})
-	tc.wantFrame("recieved STOP_SENDING, send RESET_STREAM",
+	tc.wantFrame("received STOP_SENDING, send RESET_STREAM",
 		packetType1RTT, debugFrameResetStream{
 			id: s.id,
 		})
diff --git a/quic/version_test.go b/quic/version_test.go
index 92fabd7b3..0bd8bac14 100644
--- a/quic/version_test.go
+++ b/quic/version_test.go
@@ -39,10 +39,10 @@ func TestVersionNegotiationServerReceivesUnknownVersion(t *testing.T) {
 	})
 	gotPkt := te.read()
 	if gotPkt == nil {
-		t.Fatalf("got no response; want Version Negotiaion")
+		t.Fatalf("got no response; want Version Negotiation")
 	}
 	if got := getPacketType(gotPkt); got != packetTypeVersionNegotiation {
-		t.Fatalf("got packet type %v; want Version Negotiaion", got)
+		t.Fatalf("got packet type %v; want Version Negotiation", got)
 	}
 	gotDst, gotSrc, versions := parseVersionNegotiation(gotPkt)
 	if got, want := gotDst, srcConnID; !bytes.Equal(got, want) {