diff --git a/config/config.go b/config/config.go
index 190f051d66..f1af191fef 100644
--- a/config/config.go
+++ b/config/config.go
@@ -250,8 +250,8 @@ func resolveFilepaths(baseDir string, cfg *Config) {
 
 // MuteTimeInterval represents a named set of time intervals for which a route should be muted.
 type MuteTimeInterval struct {
-	Name          string                      `yaml:"name"`
-	TimeIntervals []timeinterval.TimeInterval `yaml:"time_intervals"`
+	Name          string                      `yaml:"name" json:"name"`
+	TimeIntervals []timeinterval.TimeInterval `yaml:"time_intervals" json:"time_intervals"`
 }
 
 // UnmarshalYAML implements the yaml.Unmarshaler interface for MuteTimeInterval.