diff --git a/vendor/golang.org/x/net/http2/http2.go b/vendor/golang.org/x/net/http2/http2.go
index 27cc893..bdaba1d 100644
--- a/vendor/golang.org/x/net/http2/http2.go
+++ b/vendor/golang.org/x/net/http2/http2.go
@@ -19,6 +19,7 @@
 import (
 	"bufio"
 	"crypto/tls"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -172,6 +173,11 @@
 	return fmt.Sprintf("UNKNOWN_SETTING_%d", uint16(s))
 }
 
+var (
+	errInvalidHeaderFieldName  = errors.New("http2: invalid header field name")
+	errInvalidHeaderFieldValue = errors.New("http2: invalid header field value")
+)
+
 // validWireHeaderFieldName reports whether v is a valid header field
 // name (key). See httpguts.ValidHeaderName for the base rules.
 //
diff --git a/vendor/golang.org/x/net/http2/server.go b/vendor/golang.org/x/net/http2/server.go
index bc9e41a..de31d72 100644
--- a/vendor/golang.org/x/net/http2/server.go
+++ b/vendor/golang.org/x/net/http2/server.go
@@ -581,10 +581,13 @@
 	cancelCtx func()
 
 	// owned by serverConn's serve loop:
-	bodyBytes        int64 // body bytes seen so far
-	declBodyBytes    int64 // or -1 if undeclared
-	flow             flow  // limits writing from Handler to client
-	inflow           flow  // what the client is allowed to POST/etc to us
+	bodyBytes        int64   // body bytes seen so far
+	declBodyBytes    int64   // or -1 if undeclared
+	flow             flow    // limits writing from Handler to client
+	inflow           flow    // what the client is allowed to POST/etc to us
+	parent           *stream // or nil
+	numTrailerValues int64
+	weight           uint8
 	state            streamState
 	resetQueued      bool        // RST_STREAM queued for write; set by sc.resetStream
 	gotTrailerHeader bool        // HEADER frame for trailers was seen
diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go
index 81778be..d948e96 100644
--- a/vendor/golang.org/x/net/http2/transport.go
+++ b/vendor/golang.org/x/net/http2/transport.go
@@ -2198,6 +2198,8 @@
 	return nil
 }
 
+var errInvalidTrailers = errors.New("http2: invalid trailers")
+
 func (rl *clientConnReadLoop) endStream(cs *clientStream) {
 	// TODO: check that any declared content-length matches, like
 	// server.go's (*stream).endStream method.
@@ -2428,6 +2430,7 @@
 var (
 	errResponseHeaderListSize = errors.New("http2: response header list larger than advertised limit")
 	errRequestHeaderListSize  = errors.New("http2: request header list larger than peer's advertised limit")
+	errPseudoTrailers         = errors.New("http2: invalid pseudo header in trailers")
 )
 
 func (cc *ClientConn) logf(format string, args ...interface{}) {