diff --git a/Cargo.lock b/Cargo.lock
index ae66c6a19..075f27568 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -19,7 +19,7 @@ dependencies = [
  "arrayvec",
  "blobby",
  "bytes",
- "crypto-common 0.2.0-pre.3",
+ "crypto-common 0.2.0-pre.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapless",
 ]
 
@@ -61,12 +61,6 @@ dependencies = [
  "signature 2.2.0",
 ]
 
-[[package]]
-name = "autocfg"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
-
 [[package]]
 name = "base16ct"
 version = "0.1.1"
@@ -94,18 +88,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "bitvec"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
-dependencies = [
- "funty",
- "radium",
- "tap",
- "wyz",
-]
-
 [[package]]
 name = "blobby"
 version = "0.3.1"
@@ -132,11 +114,11 @@ dependencies = [
 
 [[package]]
 name = "block-buffer"
-version = "0.11.0-pre.3"
+version = "0.11.0-pre.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72bc448e41b30773616b4f51a23f1a51634d41ce0d06a9bf6c3065ee85e227a1"
+checksum = "0edadbde8e0243b49d434f9a23ec0590af201f400a34d7d51049284e4a77c568"
 dependencies = [
- "crypto-common 0.2.0-pre.3",
+ "crypto-common 0.2.0-pre.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -150,9 +132,9 @@ dependencies = [
 
 [[package]]
 name = "block-padding"
-version = "0.4.0-pre.3"
+version = "0.4.0-pre.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07a359e2b51a0e9b9d6a6d4582b7b62723e4a25f4e5ca6be70a6a00050202ab"
+checksum = "e8ab21a8964437caf2e83a92a1221ce65e356a2a9b8b52d58bece04005fe114e"
 dependencies = [
  "hybrid-array",
 ]
@@ -222,11 +204,11 @@ dependencies = [
 
 [[package]]
 name = "cipher"
-version = "0.5.0-pre.1"
+version = "0.5.0-pre.2"
 dependencies = [
  "blobby",
- "crypto-common 0.2.0-pre.3",
- "inout 0.2.0-pre.3",
+ "crypto-common 0.2.0-pre.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "inout 0.2.0-pre.4",
  "zeroize",
 ]
 
@@ -308,34 +290,30 @@ dependencies = [
 ]
 
 [[package]]
-name = "crypto-bigint"
-version = "0.6.0-pre.8"
+name = "crypto-common"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f83f24a157ad881f072a0ba6b4950dc0d1fbbea38df4dcc271d9a4a1501b96e"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
 dependencies = [
- "hybrid-array",
- "num-traits",
+ "generic-array",
  "rand_core 0.6.4",
- "subtle",
- "zeroize",
+ "typenum",
 ]
 
 [[package]]
 name = "crypto-common"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+version = "0.2.0-pre.4"
 dependencies = [
- "generic-array",
+ "getrandom",
+ "hybrid-array",
  "rand_core 0.6.4",
- "typenum",
 ]
 
 [[package]]
 name = "crypto-common"
-version = "0.2.0-pre.3"
+version = "0.2.0-pre.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc17eb697364b18256ec92675ebe6b7b153d2f1041e568d74533c5d0fc1ca162"
+checksum = "806e4e3731d44f1340b069551225b44c2056c105cad9e67f0c46266db8a3a6b9"
 dependencies = [
  "getrandom",
  "hybrid-array",
@@ -402,17 +380,6 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "der"
-version = "0.8.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b489fd2221710c1dd46637d66b984161fb66134f81437a8489800306bcc2ecea"
-dependencies = [
- "const-oid 0.10.0-pre.2",
- "pem-rfc7468 1.0.0-pre.0",
- "zeroize",
-]
-
 [[package]]
 name = "digest"
 version = "0.9.0"
@@ -435,24 +402,12 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.11.0-pre.3"
+version = "0.11.0-pre.4"
 dependencies = [
  "blobby",
- "block-buffer 0.11.0-pre.3",
+ "block-buffer 0.11.0-pre.4",
  "const-oid 0.10.0-pre.2",
- "crypto-common 0.2.0-pre.3",
- "subtle",
-]
-
-[[package]]
-name = "digest"
-version = "0.11.0-pre.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb3be3c52e023de5662dc05a32f747d09a1d6024fdd1f64b0850e373269efb43"
-dependencies = [
- "block-buffer 0.11.0-pre.3",
- "const-oid 0.10.0-pre.2",
- "crypto-common 0.2.0-pre.3",
+ "crypto-common 0.2.0-pre.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "subtle",
 ]
 
@@ -528,32 +483,6 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "elliptic-curve"
-version = "0.14.0-pre.0"
-dependencies = [
- "base16ct 0.2.0",
- "base64ct",
- "crypto-bigint 0.6.0-pre.8",
- "digest 0.11.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "ff 0.13.0",
- "group 0.13.0",
- "hex-literal",
- "hkdf 0.13.0-pre.0",
- "hybrid-array",
- "pem-rfc7468 1.0.0-pre.0",
- "pkcs8 0.11.0-pre.0",
- "rand_core 0.6.4",
- "sec1 0.8.0-pre.0",
- "serde_json",
- "serdect",
- "sha2 0.11.0-pre.0",
- "sha3",
- "subtle",
- "tap",
- "zeroize",
-]
-
 [[package]]
 name = "ff"
 version = "0.10.1"
@@ -580,17 +509,10 @@ version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ded41244b729663b1e574f1b4fb731469f69f79c17667b5d776b16cda0479449"
 dependencies = [
- "bitvec",
  "rand_core 0.6.4",
  "subtle",
 ]
 
-[[package]]
-name = "funty"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
-
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -681,12 +603,6 @@ dependencies = [
  "stable_deref_trait",
 ]
 
-[[package]]
-name = "hex-literal"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fe2267d4ed49bc07b63801559be28c718ea06c4738b7a03c94df7386d2cde46"
-
 [[package]]
 name = "hkdf"
 version = "0.11.0"
@@ -706,15 +622,6 @@ dependencies = [
  "hmac 0.12.1",
 ]
 
-[[package]]
-name = "hkdf"
-version = "0.13.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f3bed625061d9ed27cd87356cb46c3c8269a585be23d56c6f179c722bbea471"
-dependencies = [
- "hmac 0.13.0-pre.0",
-]
-
 [[package]]
 name = "hmac"
 version = "0.11.0"
@@ -734,15 +641,6 @@ dependencies = [
  "digest 0.10.7",
 ]
 
-[[package]]
-name = "hmac"
-version = "0.13.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e22cb0183a745c3444af57c24aa1293e1f3e538717acce39a9d3b271c999b24f"
-dependencies = [
- "digest 0.11.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "hpke"
 version = "0.10.0"
@@ -767,12 +665,11 @@ dependencies = [
 
 [[package]]
 name = "hybrid-array"
-version = "0.2.0-pre.8"
+version = "0.2.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27fbaf242418fe980caf09ed348d5a6aeabe71fc1bd8bebad641f4591ae0a46d"
+checksum = "b8c5517ac29f08e88170b9647d85cc5f21c2596de177b4867232e20b214b8da1"
 dependencies = [
  "typenum",
- "zeroize",
 ]
 
 [[package]]
@@ -787,20 +684,14 @@ dependencies = [
 
 [[package]]
 name = "inout"
-version = "0.2.0-pre.3"
+version = "0.2.0-pre.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96ea9986e1fde8d177cd039f00f9f316d3bfce9ebc2787c1267d4414adf3acb3"
+checksum = "0a2cc35b920cc3b344af824e64e508ffc2c819fc2368ed4d253244446194d2fe"
 dependencies = [
- "block-padding 0.4.0-pre.3",
+ "block-padding 0.4.0-pre.4",
  "hybrid-array",
 ]
 
-[[package]]
-name = "itoa"
-version = "1.0.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1a46d1a171d865aa5f83f92695765caa047a9b4cbae2cbf37dbd613a793fd4c"
-
 [[package]]
 name = "jobserver"
 version = "0.1.27"
@@ -810,15 +701,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "keccak"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f6d5ed8676d904364de097082f4e7d240b571b67989ced0240f08b7f966f940"
-dependencies = [
- "cpufeatures",
-]
-
 [[package]]
 name = "kem"
 version = "0.3.0-pre"
@@ -840,15 +722,6 @@ version = "0.2.151"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
 
-[[package]]
-name = "num-traits"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39e3200413f237f41ab11ad6d161bc7239c84dcb631773ccd7de3dfe4b5c267c"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "opaque-debug"
 version = "0.3.0"
@@ -904,15 +777,6 @@ dependencies = [
  "base64ct",
 ]
 
-[[package]]
-name = "pem-rfc7468"
-version = "1.0.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76a65e1c27d1680f8805b3f8c9949f08d6aa5d6cbd088c9896e64a53821dc27d"
-dependencies = [
- "base64ct",
-]
-
 [[package]]
 name = "pkcs8"
 version = "0.7.6"
@@ -920,7 +784,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee3ef9b64d26bad0536099c816c6734379e45bbd5f14798def6809e5cc350447"
 dependencies = [
  "der 0.4.5",
- "pem-rfc7468 0.2.3",
+ "pem-rfc7468",
  "spki 0.4.1",
  "zeroize",
 ]
@@ -935,16 +799,6 @@ dependencies = [
  "spki 0.7.3",
 ]
 
-[[package]]
-name = "pkcs8"
-version = "0.11.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "935c09e0aecb0cb8f8907b57438b19a068cb74a25189b06724f061170b2465ff"
-dependencies = [
- "der 0.8.0-pre.0",
- "spki 0.8.0-pre.0",
-]
-
 [[package]]
 name = "poly1305"
 version = "0.8.0"
@@ -1033,12 +887,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "radium"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
-
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -1075,12 +923,6 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "ryu"
-version = "1.0.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f98d2aa92eebf49b69786be48e4477826b256916e84a57ff2a4f21923b48eb4c"
-
 [[package]]
 name = "sec1"
 version = "0.3.0"
@@ -1108,21 +950,6 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "sec1"
-version = "0.8.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ccf9d914303f6606a4fa47933f65b92ce13991573a3c61118a458ec5b5ca6cb"
-dependencies = [
- "base16ct 0.2.0",
- "der 0.8.0-pre.0",
- "hybrid-array",
- "pkcs8 0.11.0-pre.0",
- "serdect",
- "subtle",
- "zeroize",
-]
-
 [[package]]
 name = "serde"
 version = "1.0.195"
@@ -1152,27 +979,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "serde_json"
-version = "1.0.111"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "176e46fa42316f18edd598015a5166857fc835ec732f5215eac6b7bdbf0a84f4"
-dependencies = [
- "itoa",
- "ryu",
- "serde",
-]
-
-[[package]]
-name = "serdect"
-version = "0.3.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "791ef964bfaba6be28a5c3f0c56836e17cb711ac009ca1074b9c735a3ebf240a"
-dependencies = [
- "base16ct 0.2.0",
- "serde",
-]
-
 [[package]]
 name = "sha2"
 version = "0.9.9"
@@ -1197,27 +1003,6 @@ dependencies = [
  "digest 0.10.7",
 ]
 
-[[package]]
-name = "sha2"
-version = "0.11.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de0628cd6fd8219612c2d71ad52ab8c2014a18cbdbedbde17de04d400df65997"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest 0.11.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "sha3"
-version = "0.11.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab80aa0f8ab215182f50d06bf13ed44929975b0f57ec4f2ddf97f01a4f6a41ab"
-dependencies = [
- "digest 0.11.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "keccak",
-]
-
 [[package]]
 name = "signature"
 version = "1.3.2"
@@ -1238,17 +1023,6 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
-[[package]]
-name = "signature"
-version = "2.3.0-pre.0"
-dependencies = [
- "digest 0.11.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "hex-literal",
- "rand_core 0.6.4",
- "sha2 0.11.0-pre.0",
- "signature_derive",
-]
-
 [[package]]
 name = "signature_derive"
 version = "2.1.0"
@@ -1277,16 +1051,6 @@ dependencies = [
  "der 0.7.8",
 ]
 
-[[package]]
-name = "spki"
-version = "0.8.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb2b56670f5ef52934c97efad30bf42585de0c33ec3e2a886e38b80d2db67243"
-dependencies = [
- "base64ct",
- "der 0.8.0-pre.0",
-]
-
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.0"
@@ -1310,12 +1074,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "tap"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
-
 [[package]]
 name = "typenum"
 version = "1.17.0"
@@ -1342,7 +1100,7 @@ dependencies = [
 name = "universal-hash"
 version = "0.6.0-pre"
 dependencies = [
- "crypto-common 0.2.0-pre.3",
+ "crypto-common 0.2.0-pre.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "subtle",
 ]
 
@@ -1358,15 +1116,6 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
-[[package]]
-name = "wyz"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
-dependencies = [
- "tap",
-]
-
 [[package]]
 name = "x25519-dalek"
 version = "2.0.0-pre.1"
diff --git a/Cargo.toml b/Cargo.toml
index 43e1e3c82..c61ac8267 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,13 +5,13 @@ members = [
     "async-signature",
     "cipher",
     "crypto",
-#    "crypto-common",
+    "crypto-common",
     "digest",
-    "elliptic-curve",
+#    "elliptic-curve",
     "kem",
     "password-hash",
-    "signature",
+#    "signature",
     "signature_derive",
     "universal-hash",
 ]
-exclude = ["crypto-common"]
+exclude = ["elliptic-curve", "signature"]
diff --git a/aead/Cargo.toml b/aead/Cargo.toml
index e69d1df0e..f92036811 100644
--- a/aead/Cargo.toml
+++ b/aead/Cargo.toml
@@ -16,7 +16,7 @@ categories = ["cryptography", "no-std"]
 rust-version = "1.65"
 
 [dependencies]
-crypto-common = "=0.2.0-pre.3"
+crypto-common = "=0.2.0-pre.4"
 
 # optional dependencies
 arrayvec = { version = "0.7", optional = true, default-features = false }
diff --git a/aead/src/lib.rs b/aead/src/lib.rs
index 8448e40f7..157401f14 100644
--- a/aead/src/lib.rs
+++ b/aead/src/lib.rs
@@ -255,7 +255,7 @@ macro_rules! impl_decrypt_in_place {
 
         let tag_pos = $buffer.len() - Self::TagSize::to_usize();
         let (msg, tag) = $buffer.as_mut().split_at_mut(tag_pos);
-        $aead.decrypt_in_place_detached($nonce, $aad, msg, Tag::<Self>::ref_from_slice(tag))?;
+        $aead.decrypt_in_place_detached($nonce, $aad, msg, Tag::<Self>::from_slice(tag))?;
         $buffer.truncate(tag_pos);
         Ok(())
     }};
diff --git a/cipher/Cargo.toml b/cipher/Cargo.toml
index 1968148f4..b998b22a5 100644
--- a/cipher/Cargo.toml
+++ b/cipher/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "cipher"
 description = "Traits for describing block ciphers and stream ciphers"
-version = "0.5.0-pre.1"
+version = "0.5.0-pre.2"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -13,8 +13,8 @@ keywords = ["crypto", "block-cipher", "stream-cipher", "trait"]
 categories = ["cryptography", "no-std"]
 
 [dependencies]
-crypto-common = "=0.2.0-pre.3"
-inout = "=0.2.0-pre.3"
+crypto-common = "=0.2.0-pre.4"
+inout = "=0.2.0-pre.4"
 
 # optional dependencies
 blobby = { version = "0.3", optional = true }
diff --git a/digest/Cargo.toml b/digest/Cargo.toml
index 36c62e2ee..fe639df5a 100644
--- a/digest/Cargo.toml
+++ b/digest/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "digest"
 description = "Traits for cryptographic hash functions and message authentication codes"
-version = "0.11.0-pre.3"
+version = "0.11.0-pre.4"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -13,10 +13,10 @@ keywords = ["digest", "crypto", "hash"]
 categories = ["cryptography", "no-std"]
 
 [dependencies]
-crypto-common = "=0.2.0-pre.3"
+crypto-common = "=0.2.0-pre.4"
 
 # optional dependencies
-block-buffer = { version = "=0.11.0-pre.3", optional = true }
+block-buffer = { version = "=0.11.0-pre.4", optional = true }
 subtle = { version = "2.4", default-features = false, optional = true }
 blobby = { version = "0.3", optional = true }
 const-oid = { version = "=0.10.0-pre.2", optional = true }
diff --git a/universal-hash/Cargo.toml b/universal-hash/Cargo.toml
index 9ddc4c06b..dafe0fd36 100644
--- a/universal-hash/Cargo.toml
+++ b/universal-hash/Cargo.toml
@@ -13,7 +13,7 @@ keywords = ["crypto", "mac"]
 categories = ["cryptography", "no-std"]
 
 [dependencies]
-crypto-common = "=0.2.0-pre.3"
+crypto-common = "=0.2.0-pre.4"
 subtle = { version = "2.4", default-features = false }
 
 [features]