diff --git a/otelfiber/fiber.go b/otelfiber/fiber.go
index 19f6e716..8e2ceba1 100644
--- a/otelfiber/fiber.go
+++ b/otelfiber/fiber.go
@@ -87,7 +87,8 @@ func Middleware(opts ...Option) fiber.Handler {
 		start := time.Now()
 
 		requestMetricsAttrs := httpServerMetricAttributesFromRequest(c, cfg)
-		httpServerActiveRequests.Add(savedCtx, 1, requestMetricsAttrs...)
+
+		httpServerActiveRequests.Add(savedCtx, 1, instrument.AddOption{}.applyAdd(instrument.AddConfig{attrs: requestMetricsAttrs}))
 
 		responseMetricAttrs := make([]attribute.KeyValue, len(requestMetricsAttrs))
 		copy(responseMetricAttrs, requestMetricsAttrs)
@@ -136,7 +137,7 @@ func Middleware(opts ...Option) fiber.Handler {
 				responseMetricAttrs,
 				responseAttrs...)
 
-			httpServerActiveRequests.Add(savedCtx, -1, requestMetricsAttrs...)
+			httpServerActiveRequests.Add(savedCtx, -1, instrument.AddOption{}.applyAdd(instrument.AddConfig{attrs: requestMetricsAttrs}))
 			httpServerDuration.Record(savedCtx, float64(time.Since(start).Microseconds())/1000, responseMetricAttrs...)
 			httpServerRequestSize.Record(savedCtx, requestSize, responseMetricAttrs...)
 			httpServerResponseSize.Record(savedCtx, responseSize, responseMetricAttrs...)