diff --git a/manifest/main.ml b/manifest/main.ml
index 9926e98f2a392e9d722df7b45999d99832950307..c72bfc39adfe5cf7cca7fde1d3fd578a92541921 100644
--- a/manifest/main.ml
+++ b/manifest/main.ml
@@ -857,8 +857,22 @@ let octez_crypto =
     ~js_compatible:true
 
 let _octez_crypto_tests =
-  tests
-    ["test_run"; "test_prop_signature"]
+  tezt
+    [
+      "test_run";
+      "test_prop_signature";
+      "roundtrips";
+      "key_encoding_vectors";
+      "test_base58";
+      "test_blake2b";
+      "test_crypto_box";
+      "test_deterministic_nonce";
+      "test_merkle";
+      "test_signature";
+      "test_signature_encodings";
+      "test_timelock";
+      "test_context_hash";
+    ]
     ~path:"src/lib_crypto/test"
     ~opam:"tezos-crypto"
     ~deps:
@@ -870,7 +884,7 @@ let _octez_crypto_tests =
         zarith_stubs_js;
         octez_hacl;
         data_encoding |> open_;
-        alcotest;
+        alcotezt;
         qcheck_alcotest;
         octez_test_helpers |> open_;
       ]
@@ -878,7 +892,7 @@ let _octez_crypto_tests =
     ~js_compatible:true
 
 let _octez_crypto_tests_unix =
-  tests
+  tezt
     ["test_crypto_box"]
     ~path:"src/lib_crypto/test-unix"
     ~opam:"tezos-crypto"
@@ -891,8 +905,7 @@ let _octez_crypto_tests_unix =
         zarith_stubs_js;
         octez_hacl;
         data_encoding |> open_;
-        alcotest;
-        alcotest_lwt;
+        alcotezt;
         lwt_unix;
         qcheck_alcotest;
         octez_test_helpers |> open_;
diff --git a/opam/tezos-crypto.opam b/opam/tezos-crypto.opam
index 717abc0cf11b70e519aea37ebf42177a5188c8f7..9453efa4d09ceb29acce511d70114f97b94eb693 100644
--- a/opam/tezos-crypto.opam
+++ b/opam/tezos-crypto.opam
@@ -23,14 +23,15 @@ depends: [
   "zarith_stubs_js"
   "bls12-381" { >= "6.0.1" & < "6.1.0" }
   "bls12-381-signature" { = "1.0.0" }
-  "alcotest" { with-test & >= "1.5.0" }
+  "tezt" { with-test & >= "3.0.0" }
+  "octez-alcotezt" {with-test}
   "qcheck-alcotest" { with-test & >= "0.20" }
   "tezos-test-helpers" {with-test}
-  "alcotest-lwt" { with-test & >= "1.5.0" }
 ]
 build: [
   ["rm" "-r" "vendors"]
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
+  ["dune" "build" "@runtezt" "-p" name "-j" jobs] {with-test}
 ]
 synopsis: "Tezos: library with all the cryptographic primitives used by Tezos"
diff --git a/src/lib_crypto/test-unix/dune b/src/lib_crypto/test-unix/dune
index c59f705fde4b2f4a6a9874056f1c7a54a99b413c..450a8d25728194b1036e1acc1bf6ce889765a33c 100644
--- a/src/lib_crypto/test-unix/dune
+++ b/src/lib_crypto/test-unix/dune
@@ -1,9 +1,11 @@
 ; This file was automatically generated, do not edit.
 ; Edit file manifest/main.ml instead.
 
-(executable
- (name test_crypto_box)
+(library
+ (name src_lib_crypto_test_unix_tezt_lib)
+ (instrumentation (backend bisect_ppx))
  (libraries
+  tezt.core
   tezos-stdlib
   tezos-crypto
   tezos-error-monad
@@ -11,20 +13,32 @@
   zarith_stubs_js
   tezos-hacl
   data-encoding
-  alcotest
-  alcotest-lwt
+  octez-alcotezt
   lwt.unix
   qcheck-alcotest
   tezos-test-helpers)
+ (library_flags (:standard -linkall))
  (flags
   (:standard)
+  -open Tezt_core
+  -open Tezt_core.Base
   -open Tezos_stdlib
   -open Tezos_crypto
   -open Tezos_error_monad.TzLwtreslib
   -open Data_encoding
-  -open Tezos_test_helpers))
+  -open Octez_alcotezt
+  -open Tezos_test_helpers)
+ (modules test_crypto_box))
+
+(executable
+ (name main)
+ (libraries
+  src_lib_crypto_test_unix_tezt_lib
+  tezt)
+ (modules main))
+
+(rule (alias runtezt) (package tezos-crypto) (action (run %{dep:./main.exe})))
 
 (rule
- (alias runtest)
- (package tezos-crypto)
- (action (run %{dep:./test_crypto_box.exe})))
+ (targets main.ml)
+ (action (with-stdout-to %{targets} (echo "let () = Tezt.Test.run ()"))))
diff --git a/src/lib_crypto/test/dune b/src/lib_crypto/test/dune
index 9ceaa2c9e182f7ca21f5a176090f045e5ced788a..4cb9c0ef0c0531b65d1d8ea9b79d4a0b292038bd 100644
--- a/src/lib_crypto/test/dune
+++ b/src/lib_crypto/test/dune
@@ -3,10 +3,11 @@
 
 (env (_ (env-vars (NODE_PRELOAD hacl-wasm,ocaml-bls12-381,secp256k1-wasm))))
 
-(executables
- (names test_run test_prop_signature)
- (modes native js)
+(library
+ (name src_lib_crypto_test_tezt_lib)
+ (instrumentation (backend bisect_ppx))
  (libraries
+  tezt.core
   tezos-stdlib
   tezos-crypto
   tezos-error-monad
@@ -14,34 +15,64 @@
   zarith_stubs_js
   tezos-hacl
   data-encoding
-  alcotest
+  octez-alcotezt
   qcheck-alcotest
   tezos-test-helpers)
  (js_of_ocaml)
+ (library_flags (:standard -linkall))
  (flags
   (:standard)
+  -open Tezt_core
+  -open Tezt_core.Base
   -open Tezos_stdlib
   -open Tezos_crypto
   -open Tezos_error_monad.TzLwtreslib
   -open Data_encoding
-  -open Tezos_test_helpers))
+  -open Octez_alcotezt
+  -open Tezos_test_helpers)
+ (modules
+  test_run
+  test_prop_signature
+  roundtrips
+  key_encoding_vectors
+  test_base58
+  test_blake2b
+  test_crypto_box
+  test_deterministic_nonce
+  test_merkle
+  test_signature
+  test_signature_encodings
+  test_timelock
+  test_context_hash))
 
-(rule
- (alias runtest)
- (package tezos-crypto)
- (action (run %{dep:./test_run.exe})))
+(executable
+ (name main)
+ (modes native)
+ (libraries
+  src_lib_crypto_test_tezt_lib
+  tezt)
+ (modules main))
+
+(rule (alias runtezt) (package tezos-crypto) (action (run %{dep:./main.exe})))
 
 (rule
- (alias runtest)
- (package tezos-crypto)
- (action (run %{dep:./test_prop_signature.exe})))
+ (targets main.ml)
+ (action (with-stdout-to %{targets} (echo "let () = Tezt.Test.run ()"))))
+
+(executable
+ (name main_js)
+ (modes js)
+ (libraries
+  src_lib_crypto_test_tezt_lib
+  tezt.js)
+ (js_of_ocaml)
+ (modules main_js))
 
 (rule
- (alias runtest_js)
+ (alias runtezt_js)
  (package tezos-crypto)
- (action (run node %{dep:./test_run.bc.js})))
+ (action (run node %{dep:./main_js.bc.js})))
 
 (rule
- (alias runtest_js)
- (package tezos-crypto)
- (action (run node %{dep:./test_prop_signature.bc.js})))
+ (targets main_js.ml)
+ (action (with-stdout-to %{targets} (echo "let () = Tezt_js.Test.run ()"))))
diff --git a/tezt/tests/dune b/tezt/tests/dune
index b9b233223ff5b4ac8af94ccc73fcd56d8a2e089e..67b5c99cefd1e267bfcbda9e79c4bfb3102ae21e 100644
--- a/tezt/tests/dune
+++ b/tezt/tests/dune
@@ -60,6 +60,8 @@
   src_lib_lwt_result_stdlib_test_tezt_lib
   src_lib_lazy_containers_test_tezt_lib
   src_lib_error_monad_test_tezt_lib
+  src_lib_crypto_test_unix_tezt_lib
+  src_lib_crypto_test_tezt_lib
   src_lib_context_test_tezt_lib
   src_lib_context_memory_test_tezt_lib
   src_lib_client_base_unix_test_tezt_lib