diff --git a/Cargo.lock b/Cargo.lock
index afdc81a..11d9a0c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -111,9 +111,9 @@ dependencies = [
 
 [[package]]
 name = "block-buffer"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96eb4cdd6cf1b31d671e9efe75c5d1ec614776856cefbe109ca373554a6d514f"
+checksum = "cdd35008169921d80bc60d3d0ab416eecb028c4cd653352907921d95084790be"
 dependencies = [
  "hybrid-array",
 ]
@@ -149,7 +149,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c536927023d1c432e6e23a25ef45f6756094eac2ab460db5fb17a772acdfd312"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "rand_core 0.10.0",
 ]
 
@@ -205,6 +205,12 @@ version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3e64b0cc0439b12df2fa678eae89a1c56a529fd067a9115f7827f1fffd22b32"
 
+[[package]]
+name = "cmov"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de0758edba32d61d1fd9f4d69491b47604b91ee2f7e6b33de7e54ca4ebe55dc3"
+
 [[package]]
 name = "const-oid"
 version = "0.10.2"
@@ -220,6 +226,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "criterion"
 version = "0.5.1"
@@ -289,20 +304,29 @@ checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
 
 [[package]]
 name = "crypto-common"
-version = "0.2.0-rc.15"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f8441110cea75afde0b89a8d796e2bc67b23432f5a9566cb15d9d365d91a2b0"
+checksum = "77727bb15fa921304124b128af125e7e3b968275d1b108b379190264f4423710"
 dependencies = [
  "hybrid-array",
 ]
 
+[[package]]
+name = "ctutils"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1005a6d4446f5120ef475ad3d2af2b30c49c2c9c6904258e3bb30219bebed5e4"
+dependencies = [
+ "cmov",
+]
+
 [[package]]
 name = "curve25519-dalek"
-version = "5.0.0-pre.5"
+version = "5.0.0-pre.6"
 dependencies = [
  "bincode",
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "criterion",
  "curve25519-dalek-derive",
  "digest",
@@ -342,14 +366,14 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.11.0-rc.11"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b42f1d9edf5207c137646b568a0168ca0ec25b7f9eaf7f9961da51a3d91cea"
+checksum = "4850db49bf08e663084f7fb5c87d202ef91a3907271aff24a94eb97ff039153c"
 dependencies = [
  "block-buffer",
  "const-oid",
  "crypto-common",
- "subtle",
+ "ctutils",
 ]
 
 [[package]]
@@ -365,7 +389,7 @@ dependencies = [
 
 [[package]]
 name = "ed25519-dalek"
-version = "3.0.0-pre.5"
+version = "3.0.0-pre.6"
 dependencies = [
  "bincode",
  "blake2",
@@ -520,9 +544,9 @@ checksum = "e712f64ec3850b98572bffac52e2c6f282b29fe6c5fa6d42334b30be438d95c1"
 
 [[package]]
 name = "hybrid-array"
-version = "0.4.6"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b41fb3dc24fe72c2e3a4685eed55917c2fb228851257f4a8f2d985da9443c3e5"
+checksum = "8655f91cd07f2b9d0c24137bd650fe69617773435ee5ec83022377777ce65ef1"
 dependencies = [
  "typenum",
 ]
@@ -583,11 +607,12 @@ dependencies = [
 
 [[package]]
 name = "keccak"
-version = "0.2.0-rc.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a412fe37705d515cba9dbf1448291a717e187e2351df908cfc0137cbec3d480"
+checksum = "9e24a010dd405bd7ed803e5253182815b41bf2e6a80cc3bfc066658e03a198aa"
 dependencies = [
- "cpufeatures",
+ "cfg-if",
+ "cpufeatures 0.3.0",
 ]
 
 [[package]]
@@ -1027,15 +1052,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c5f3b1e2dc8aad28310d8410bd4d7e180eca65fca176c52ab00d364475d0024"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
 [[package]]
 name = "sha3"
-version = "0.11.0-rc.7"
+version = "0.11.0-rc.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5bfe7820113e633d8886e839aae78c1184b8d7011000db6bc7eb61e34f28350"
+checksum = "0b233a7d59d7bfc027208506a33ffc9532b2acb24ddc61fe7e758dc2250db431"
 dependencies = [
  "digest",
  "keccak",
@@ -1456,7 +1481,7 @@ dependencies = [
 
 [[package]]
 name = "x25519-dalek"
-version = "3.0.0-pre.5"
+version = "3.0.0-pre.6"
 dependencies = [
  "bincode",
  "criterion",
diff --git a/ed25519-dalek/Cargo.toml b/ed25519-dalek/Cargo.toml
index 2f9a0be..c48e874 100644
--- a/ed25519-dalek/Cargo.toml
+++ b/ed25519-dalek/Cargo.toml
@@ -37,7 +37,7 @@ sha2 = { version = "0.11.0-rc.5", default-features = false }
 subtle = { version = "2.3.0", default-features = false }
 
 # optional features
-keccak = { version = "0.2.0-rc.1", default-features = false, optional = true }
+keccak = { version = "0.2", default-features = false, optional = true }
 rand_core = { version = "0.10", default-features = false, optional = true }
 serde = { version = "1.0", default-features = false, optional = true }
 zeroize = { version = "1.5", default-features = false, optional = true }
@@ -52,7 +52,7 @@ x25519-dalek = { version = "=3.0.0-pre.6", default-features = false, features =
 ] }
 blake2 = "0.11.0-rc.5"
 chacha20 = { version = "0.10.0-rc.10", default-features = false, features = ["rng"] }
-sha3 = "0.11.0-rc.7"
+sha3 = "0.11.0-rc.9"
 getrandom = { version = "0.4.0-rc.1", features = ["sys_rng"] }
 hex = "0.4"
 bincode = "1.0"
diff --git a/ed25519-dalek/src/batch/strobe.rs b/ed25519-dalek/src/batch/strobe.rs
index 6aa7302..b21b729 100644
--- a/ed25519-dalek/src/batch/strobe.rs
+++ b/ed25519-dalek/src/batch/strobe.rs
@@ -1,6 +1,7 @@
 //! Minimal implementation of (parts of) Strobe.
 
 use core::ops::{Deref, DerefMut};
+use keccak::Keccak;
 
 #[cfg(feature = "zeroize")]
 use zeroize::Zeroize;
@@ -57,7 +58,7 @@ impl Strobe128 {
             let mut st = AlignedKeccakState([0u8; 200]);
             st[0..6].copy_from_slice(&[1, STROBE_R + 2, 1, 0, 1, 96]);
             st[6..18].copy_from_slice(b"STROBEv1.0.2");
-            keccak::f1600(transmute_state(&mut st));
+            Keccak::new().with_f1600(|f1600| f1600(transmute_state(&mut st)));
 
             st
         };
@@ -100,7 +101,7 @@ impl Strobe128 {
         self.state[self.pos as usize] ^= self.pos_begin;
         self.state[(self.pos + 1) as usize] ^= 0x04;
         self.state[(STROBE_R + 1) as usize] ^= 0x80;
-        keccak::f1600(transmute_state(&mut self.state));
+        Keccak::new().with_f1600(|f1600| f1600(transmute_state(&mut self.state)));
         self.pos = 0;
         self.pos_begin = 0;
     }