diff --git a/pkg/frontend/querymiddleware/roundtrip.go b/pkg/frontend/querymiddleware/roundtrip.go
index 0aa5d49fa5f..05da4ffe986 100644
--- a/pkg/frontend/querymiddleware/roundtrip.go
+++ b/pkg/frontend/querymiddleware/roundtrip.go
@@ -81,6 +81,8 @@ type Config struct {
 	ExtraInstantQueryMiddlewares []MetricsQueryMiddleware `yaml:"-"`
 	ExtraRangeQueryMiddlewares   []MetricsQueryMiddleware `yaml:"-"`
 
+	ExtraPropagateHeaders []string `yaml:"-"`
+
 	QueryResultResponseFormat string `yaml:"query_result_response_format"`
 }
 
diff --git a/pkg/mimir/modules.go b/pkg/mimir/modules.go
index a2839280bb9..d6b9a09b266 100644
--- a/pkg/mimir/modules.go
+++ b/pkg/mimir/modules.go
@@ -699,7 +699,7 @@ func (t *Mimir) initFlusher() (serv services.Service, err error) {
 // initQueryFrontendCodec initializes query frontend codec.
 // NOTE: Grafana Enterprise Metrics depends on this.
 func (t *Mimir) initQueryFrontendCodec() (services.Service, error) {
-	t.QueryFrontendCodec = querymiddleware.NewPrometheusCodec(t.Registerer, t.Cfg.Querier.EngineConfig.LookbackDelta, t.Cfg.Frontend.QueryMiddleware.QueryResultResponseFormat, nil)
+	t.QueryFrontendCodec = querymiddleware.NewPrometheusCodec(t.Registerer, t.Cfg.Querier.EngineConfig.LookbackDelta, t.Cfg.Frontend.QueryMiddleware.QueryResultResponseFormat, t.Cfg.Frontend.QueryMiddleware.ExtraPropagateHeaders)
 	return nil, nil
 }