diff --git a/vendor/go.uber.org/zap/zapcore/field.go b/vendor/go.uber.org/zap/zapcore/field.go
index 6a5e33e..ae772e4 100644
--- a/vendor/go.uber.org/zap/zapcore/field.go
+++ b/vendor/go.uber.org/zap/zapcore/field.go
@@ -160,7 +160,7 @@
 	case NamespaceType:
 		enc.OpenNamespace(f.Key)
 	case StringerType:
-		enc.AddString(f.Key, f.Interface.(fmt.Stringer).String())
+		err = encodeStringer(f.Key, f.Interface, enc)
 	case ErrorType:
 		encodeError(f.Key, f.Interface.(error), enc)
 	case SkipType:
@@ -199,3 +199,14 @@
 		fields[i].AddTo(enc)
 	}
 }
+
+func encodeStringer(key string, stringer interface{}, enc ObjectEncoder) (err error) {
+	defer func() {
+		if v := recover(); v != nil {
+			err = fmt.Errorf("PANIC=%v", v)
+		}
+	}()
+
+	enc.AddString(key, stringer.(fmt.Stringer).String())
+	return
+}
diff --git a/vendor/go.uber.org/zap/zapcore/json_encoder.go b/vendor/go.uber.org/zap/zapcore/json_encoder.go
index 2dc67d8..9aec4ea 100644
--- a/vendor/go.uber.org/zap/zapcore/json_encoder.go
+++ b/vendor/go.uber.org/zap/zapcore/json_encoder.go
@@ -137,6 +137,9 @@
 	if enc.reflectBuf == nil {
 		enc.reflectBuf = bufferpool.Get()
 		enc.reflectEnc = json.NewEncoder(enc.reflectBuf)
+
+		// For consistency with our custom JSON encoder.
+		enc.reflectEnc.SetEscapeHTML(false)
 	} else {
 		enc.reflectBuf.Reset()
 	}
diff --git a/vendor/go.uber.org/zap/zapcore/memory_encoder.go b/vendor/go.uber.org/zap/zapcore/memory_encoder.go
index 6ef85b0..dfead08 100644
--- a/vendor/go.uber.org/zap/zapcore/memory_encoder.go
+++ b/vendor/go.uber.org/zap/zapcore/memory_encoder.go
@@ -158,7 +158,7 @@
 }
 
 func (s *sliceArrayEncoder) AppendBool(v bool)              { s.elems = append(s.elems, v) }
-func (s *sliceArrayEncoder) AppendByteString(v []byte)      { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendByteString(v []byte)      { s.elems = append(s.elems, string(v)) }
 func (s *sliceArrayEncoder) AppendComplex128(v complex128)  { s.elems = append(s.elems, v) }
 func (s *sliceArrayEncoder) AppendComplex64(v complex64)    { s.elems = append(s.elems, v) }
 func (s *sliceArrayEncoder) AppendDuration(v time.Duration) { s.elems = append(s.elems, v) }