diff --git a/internal/cache/cache.go b/internal/cache/cache.go
index c45d5c1..f9a8cac 100644
--- a/internal/cache/cache.go
+++ b/internal/cache/cache.go
@@ -19,7 +19,6 @@ type Cache struct {
 	cfg        CacheConfig
 	cr         *os.Root
 	mirrorIdx  atomic.Uint64
-	refreshMu  sync.Mutex
 	client     http.Client
 	inFlight   map[string]*inFlight
 	inFlightMu sync.Mutex