diff --git a/x509.opam b/x509.opam
index d8bed3f..ab61012 100644
--- a/x509.opam
+++ b/x509.opam
@@ -17,7 +17,7 @@ depends: [
   "asn1-combinators" {>= "0.3.1"}
   "ptime"
   "base64" {>= "3.3.0"}
-  "mirage-crypto"
+  "mirage-crypto" {>= "1.0.0"}
   "mirage-crypto-pk"
   "mirage-crypto-ec" {>= "0.10.7"}
   "mirage-crypto-rng"
@@ -27,7 +27,7 @@ depends: [
   "gmap" {>= "0.3.0"}
   "domain-name" {>= "0.3.0"}
   "logs"
-  "pbkdf"
+  "pbkdf" {>= "2.0.0"}
   "ohex" {>= "0.2.0"}
   "ipaddr" {>= "5.2.0"}
 ]
@@ -48,11 +48,3 @@ The Public Key Cryptography Standards (PKCS) defines encoding and decoding
 (in ASN.1 DER and PEM format), which is also implemented by this library -
 namely PKCS 1, PKCS 5, PKCS 7, PKCS 8, PKCS 9, PKCS 10, and PKCS 12.
 """
-
-pin-depends: [
-  [ "mirage-crypto.dev" "git+https://github.com/mirage/mirage-crypto.git#98f01b14f5ebf98ba0e7e9c2ba97ec518f90fddc" ]
-  [ "mirage-crypto-pk.dev" "git+https://github.com/mirage/mirage-crypto.git#98f01b14f5ebf98ba0e7e9c2ba97ec518f90fddc" ]
-  [ "mirage-crypto-ec.dev" "git+https://github.com/mirage/mirage-crypto.git#98f01b14f5ebf98ba0e7e9c2ba97ec518f90fddc" ]
-  [ "mirage-crypto-rng.dev" "git+https://github.com/mirage/mirage-crypto.git#98f01b14f5ebf98ba0e7e9c2ba97ec518f90fddc" ]
-  [ "pbkdf.dev" "git+https://github.com/dinosaure/ocaml-pbkdf.git#0ef32f89cac4091e74d1a0fa34cf417f9b7c70df" ]
-]