diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 4b2eab2..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "hashes"]
-	path = hashes
-	url = https://github.com/RustCrypto/hashes
diff --git a/Cargo.lock b/Cargo.lock
index 4bc3526..6b718af 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -77,7 +77,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f9a9c93d95a4f3344947e14ad2fd9c1d2ea789c8f8ecef6a906b9ac295301763"
 dependencies = [
  "ascon-core",
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -93,7 +93,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fbc405b3b8472f6e019aedf942fdee9516a0546d12e053d3744416e8f21ddb8a"
 dependencies = [
  "belt-block",
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -102,7 +102,7 @@ version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46502ad458c9a52b69d4d4d32775c788b7a1b85e8bc9d482d92250fc0e3f8efe"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -127,15 +127,6 @@ dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "block-buffer"
-version = "0.11.0-rc.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a229bfd78e4827c91b9b95784f69492c1b77c1ab75a45a8a037b139215086f94"
-dependencies = [
- "hybrid-array",
-]
-
 [[package]]
 name = "cc"
 version = "1.2.30"
@@ -231,43 +222,24 @@ dependencies = [
  "typenum",
 ]
 
-[[package]]
-name = "crypto-common"
-version = "0.2.0-rc.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a23fa214dea9efd4dacee5a5614646b30216ae0f05d4bb51bafb50e9da1c5be"
-dependencies = [
- "hybrid-array",
-]
-
 [[package]]
 name = "digest"
 version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
- "block-buffer 0.10.4",
- "crypto-common 0.1.6",
+ "block-buffer",
+ "crypto-common",
  "subtle",
 ]
 
-[[package]]
-name = "digest"
-version = "0.11.0-rc.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "460dd7f37e4950526b54a5a6b1f41b6c8e763c58eb9a8fc8fc05ba5c2f44ca7b"
-dependencies = [
- "block-buffer 0.11.0-rc.4",
- "crypto-common 0.2.0-rc.3",
-]
-
 [[package]]
 name = "fsb"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e54a22467e3d3e1b2d014c67cb074fe361d80e3293ffab4128918313eaf737c8"
 dependencies = [
- "digest 0.10.7",
+ "digest",
  "whirlpool",
 ]
 
@@ -287,7 +259,7 @@ version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2f960e0ba8eb5e47a7d45097dc4159b5ef63d82e62dc85894bfcfd8e6b85526c"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -296,7 +268,7 @@ version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "343cfc165f92a988fd60292f7a0bfde4352a5a0beff9fbec29251ca4e9676e4d"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -311,15 +283,6 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6fe2267d4ed49bc07b63801559be28c718ea06c4738b7a03c94df7386d2cde46"
 
-[[package]]
-name = "hybrid-array"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891d15931895091dea5c47afa5b3c9a01ba634b311919fd4d41388fa0e3d76af"
-dependencies = [
- "typenum",
-]
-
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.1"
@@ -332,7 +295,7 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f65735f9e73adc203417d2e05352aef71d7e832ec090f65de26c96c9ec563aa5"
 dependencies = [
- "digest 0.10.7",
+ "digest",
  "hex-literal",
  "ppv-lite86",
 ]
@@ -343,7 +306,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4dc5fdb62af2f520116927304f15d25b3c2667b4817b90efdc045194c912c54"
 dependencies = [
- "digest 0.10.7",
+ "digest",
  "sha3",
 ]
 
@@ -356,13 +319,6 @@ dependencies = [
  "cpufeatures",
 ]
 
-[[package]]
-name = "kupyna"
-version = "0.1.0"
-dependencies = [
- "digest 0.11.0-rc.0",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.174"
@@ -376,7 +332,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d89e7ee0cfbedfc4da3340218492196241d89eefb6dab27de5df917a6d2e78cf"
 dependencies = [
  "cfg-if",
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -385,7 +341,7 @@ version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f4f0f3ed25ff4f8d8d102288d92f900efc202661c884cf67dfe4f0d07c43d1f"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -394,7 +350,7 @@ version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da5ac363534dce5fabf69949225e174fbf111a498bf0ff794c8ea1fba9f3dda"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -405,7 +361,7 @@ checksum = "a4895175b425cb1f87721b59f0f286c2092bd4af812243672510e1ac53e2e0ad"
 
 [[package]]
 name = "picca"
-version = "0.3.1"
+version = "0.3.2"
 dependencies = [
  "ascon-hash",
  "belt-hash",
@@ -418,7 +374,6 @@ dependencies = [
  "groestl",
  "jh",
  "k12",
- "kupyna",
  "md-5",
  "md2",
  "md4",
@@ -467,7 +422,7 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd124222d17ad93a644ed9d011a40f4fb64aa54275c08cc216524a9ea82fb09f"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -478,7 +433,7 @@ checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -489,7 +444,7 @@ checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -498,7 +453,7 @@ version = "0.10.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
 dependencies = [
- "digest 0.10.7",
+ "digest",
  "keccak",
 ]
 
@@ -508,7 +463,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "990a6c7ff96ecc5664129bbf1f7b46a5a7c13f297d05af75e702f861cea6f08a"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -523,7 +478,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96a90a220ab98dbbfeabeae7c558a79f37839c10b9ef55c77082a741a463cab7"
 dependencies = [
- "digest 0.10.7",
+ "digest",
  "threefish",
 ]
 
@@ -533,7 +488,7 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ebb9a3b702d0a7e33bc4d85a14456633d2b165c2ad839c5fd9a8417c1ab15860"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -542,7 +497,7 @@ version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e7fe6ed8a42cec360e070309427bb7959e102849b0dbaa7de19d5b9860bd536"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -580,7 +535,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "579abbce4ad73b04386dbeb34369c9873a8f9b749c7b99cbf479a2949ff715ed"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
@@ -613,7 +568,7 @@ version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1ae50671d985c15b3214c7d969b8b520759fb3c8682444bec15ef775335a05c"
 dependencies = [
- "digest 0.10.7",
+ "digest",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index b870b51..d52692f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "picca"
-version = "0.3.1"
+version = "0.3.2"
 edition = "2021"
 
 [dependencies]
@@ -16,7 +16,6 @@ gost94 = "0.10.4"
 groestl = "0.10.1"
 jh = "0.1.0"
 k12 = "0.3.0"
-kupyna = { path = "./hashes/kupyna" }
 md2 = "0.10.2"
 md4 = "0.10.2"
 ripemd = "0.1.3"
diff --git a/hashes b/hashes
deleted file mode 160000
index 57f5b8b..0000000
--- a/hashes
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 57f5b8b0cd38ad883a85e1b5d5a51168f24ed408