diff --git a/packages/openvpn.0.0.1~dev/opam b/packages/openvpn.0.0.1~dev/opam
index f04e4fa..3593041 100644
--- a/packages/openvpn.0.0.1~dev/opam
+++ b/packages/openvpn.0.0.1~dev/opam
@@ -19,7 +19,7 @@ depends: [
   "ocaml" {>= "4.08.0"}
   "odoc" {with-doc}
 
-  "fmt"      { >= "0.8.6" }
+  "fmt"      { >= "0.8.7" }
   "logs"     { >= "0.6.2" }
   "rresult"  { >= "0.6.0" }
 
@@ -38,9 +38,9 @@ depends: [
   "mirage-crypto-rng" {>= "0.8.0"}
   "ptime"
   "rresult"
-  "tls" {>= "0.13.0"}
+  "tls" {>= "0.15.0"}
   "dns-client" {>= "5.0.0"}
-  "x509" {>= "0.13.0"}
+  "x509" {>= "0.15.0"}
   "duration"
 
   "tuntap" {>= "1.8.1"}