diff --git a/server/logger.go b/server/logger.go
index 6cc7dd504a61acd6ead8e4ca0a4a2ef258b95fcb..4e37160d5e964e899966c1fbc95cd25cd96e1477 100644
--- a/server/logger.go
+++ b/server/logger.go
@@ -151,7 +151,7 @@ func NewJSONLogger(output *os.File, level zapcore.Level, format LoggingFormat) *
 func newJSONEncoder(format LoggingFormat) zapcore.Encoder {
 	if format == StackdriverFormat {
 		return zapcore.NewJSONEncoder(zapcore.EncoderConfig{
-			TimeKey:        "timestamp",
+			TimeKey:        "time",
 			LevelKey:       "severity",
 			NameKey:        "logger",
 			CallerKey:      "caller",