diff --git a/cohttp-mirage.opam b/cohttp-mirage.opam
index fffebe0eb..2e713279c 100644
--- a/cohttp-mirage.opam
+++ b/cohttp-mirage.opam
@@ -23,7 +23,7 @@ depends: [
   "mirage-flow" {>= "2.0.0"}
   "mirage-channel" {>= "4.0.0"}
   "conduit" {>= "2.0.2"}
-  "conduit-mirage" {>= "2.0.2"}
+  "conduit-mirage" {>= "2.3.0"}
   "mirage-kv" {>= "3.0.0"}
   "lwt" {>= "2.4.3"}
   "cohttp" {= version}
diff --git a/cohttp.opam b/cohttp.opam
index d89e7f976..9e6a95ac6 100644
--- a/cohttp.opam
+++ b/cohttp.opam
@@ -44,7 +44,7 @@ depends: [
   "fmt" {with-test}
   "jsonm" {build}
   "alcotest" {with-test}
-  "crowbar" {with-test}
+  "crowbar" {with-test & >= "0.2"}
 ]
 build: [
   ["dune" "subst"] {dev}