diff --git a/tcpip.opam b/tcpip.opam
index f86ed1621..b828fe435 100644
--- a/tcpip.opam
+++ b/tcpip.opam
@@ -38,7 +38,7 @@ depends: [
   "mirage-profile" {>= "0.5"}
   "mirage-flow" {test & >= "1.2.0"}
   "mirage-vnetif" {test & >= "0.4.0"}
-  "alcotest" {test}
+  "alcotest" {test & >="0.7.0"}
   "ounit" {test}
   "pcap-format" {test}
   "mirage-clock-unix" {test & >= "1.2.0"}