diff --git a/awa.opam b/awa.opam
index ab865db..5f87c66 100644
--- a/awa.opam
+++ b/awa.opam
@@ -19,7 +19,7 @@ depends: [
   "ppx_sexp_conv"
   "ppx_cstruct"
   "mirage-crypto" {>= "0.8.1"}
-  "mirage-crypto-rng"
+  "mirage-crypto-rng" {>= "0.11.0"}
   "mirage-crypto-pk"
   "mirage-crypto-ec" {>= "0.10.0"}
   "x509" {>= "0.15.2"}
diff --git a/test/awa_gen_key.ml b/test/awa_gen_key.ml
index e2a7872..65a3d00 100644
--- a/test/awa_gen_key.ml
+++ b/test/awa_gen_key.ml
@@ -1,6 +1,6 @@
 
 let gen_key seed typ =
-  Mirage_crypto_rng_unix.initialize ();
+  Mirage_crypto_rng_unix.initialize (module Mirage_crypto_rng.Fortuna);
   let b64s x = Cstruct.to_string x |> Base64.encode_string in
   let seed = match seed with
     | None -> b64s (Mirage_crypto_rng.generate 30)
diff --git a/test/awa_lwt_server.ml b/test/awa_lwt_server.ml
index b805fbe..71da2f9 100644
--- a/test/awa_lwt_server.ml
+++ b/test/awa_lwt_server.ml
@@ -63,7 +63,7 @@ let rec wait_connection priv_key listen_fd server_port =
   wait_connection priv_key listen_fd server_port
 
 let main =
-  Mirage_crypto_rng_unix.initialize ();
+  Mirage_crypto_rng_unix.initialize (module Mirage_crypto_rng.Fortuna);
   let g = Mirage_crypto_rng.(create ~seed:(Cstruct.of_string "180586") (module Fortuna)) in
   let (ec_priv,_) = Mirage_crypto_ec.Ed25519.generate ~g () in
   let priv_key = Awa.Hostkey.Ed25519_priv (ec_priv) in
diff --git a/test/awa_test_client.ml b/test/awa_test_client.ml
index 20e9383..5917409 100644
--- a/test/awa_test_client.ml
+++ b/test/awa_test_client.ml
@@ -39,7 +39,7 @@ let write_cstruct fd buf =
 
 let jump _ user seed typ keyfile authenticator host port =
   let ( let* ) = Result.bind in
-  Mirage_crypto_rng_unix.initialize ();
+  Mirage_crypto_rng_unix.initialize (module Mirage_crypto_rng.Fortuna);
   let fd = Unix.(socket PF_INET SOCK_STREAM 0) in
   Unix.(connect fd (ADDR_INET (inet_addr_of_string host, port)));
   match
diff --git a/test/awa_test_server.ml b/test/awa_test_server.ml
index 30cda10..b25e639 100644
--- a/test/awa_test_server.ml
+++ b/test/awa_test_server.ml
@@ -136,7 +136,7 @@ let rec wait_connection priv_key listen_fd server_port =
   wait_connection priv_key listen_fd server_port
 
 let () =
-  Mirage_crypto_rng_unix.initialize ();
+  Mirage_crypto_rng_unix.initialize (module Mirage_crypto_rng.Fortuna);
   let g = Mirage_crypto_rng.(create ~seed:(Cstruct.of_string "180586") (module Fortuna)) in
   let (ec_priv,_) = Mirage_crypto_ec.Ed25519.generate ~g () in
   let priv_key = Awa.Hostkey.Ed25519_priv (ec_priv) in
diff --git a/test/test.ml b/test/test.ml
index f26cd24..bf54dc2 100644
--- a/test/test.ml
+++ b/test/test.ml
@@ -608,7 +608,7 @@ let all_tests = [
 ]
 
 let _ =
-  Mirage_crypto_rng_unix.initialize ();
+  Mirage_crypto_rng_unix.initialize (module Mirage_crypto_rng.Fortuna);
   Sys.set_signal Sys.sigalrm (Sys.Signal_handle (fun _ -> failwith "timeout"));
   Unix.chmod "data/awa_test_rsa" 0o600;
   List.iter run_test all_tests;