diff --git a/stdbus/bus.go b/stdbus/bus.go
index 5583c81..725a2c3 100644
--- a/stdbus/bus.go
+++ b/stdbus/bus.go
@@ -2,6 +2,8 @@ package stdbus
 
 import (
 	"sync"
+	"os"
+	"strconv"
 
 	"github.com/CyCoreSystems/ari/v6"
 )
@@ -27,6 +29,13 @@ func New() ari.Bus {
 		subs: []*subscription{},
 	}
 
+	if size := os.Getenv("BUS_BUFFERSIZE"); size != "" {
+		sizeInt, err := strconv.Atoi(size)
+		if err == nil && sizeInt > 0 {
+			subscriptionEventBufferSize = sizeInt
+		}
+	}
+
 	return b
 }