diff --git a/mirage-monitoring.opam b/mirage-monitoring.opam
index 3a789a3..2653c47 100644
--- a/mirage-monitoring.opam
+++ b/mirage-monitoring.opam
@@ -16,7 +16,7 @@ depends: [
   "metrics-influx" {>= "0.2.0"}
   "mirage-time" {>= "2.0.0"}
   "tcpip" {>= "7.0.0"}
-  "mirage-solo5" {>= "0.7.0"}
+  "mirage-solo5" {>= "0.9.0"}
   "mirage-runtime"
   "memtrace-mirage" {>= "0.2.1.2.2"}
   "mirage-clock" {>= "4.0.0"}