diff --git a/index/cids.go b/index/cids.go
index 2e089d4..10e84ba 100644
--- a/index/cids.go
+++ b/index/cids.go
@@ -56,6 +56,7 @@ func (ri *redisIndex) CidEntriesByBlocks(ctx context.Context, bs []blocks.Block)
 			continue
 		}
 		if err = ri.getAndAddToEntries(ctx, entries, b.Cid()); err != nil {
+			entries.Release()
 			return nil, err
 		}
 		visited[b.Cid().KeyString()] = struct{}{}
diff --git a/index/loader.go b/index/loader.go
index c8d92b7..b949b07 100644
--- a/index/loader.go
+++ b/index/loader.go
@@ -53,6 +53,12 @@ func (ri *redisIndex) CheckKey(ctx context.Context, key string) (exists bool, er
 	if exists, release, err = ri.acquireKey(ctx, key); err != nil {
 		return
 	}
+	if exists {
+		if err = ri.updateKeyUsage(ctx, key); err != nil {
+			release()
+			return false, err
+		}
+	}
 	release()
 	return
 }