diff --git a/Cargo.lock b/Cargo.lock
index a6cac25..2c27e0e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -100,6 +100,15 @@ dependencies = [
  "wyz",
 ]
 
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.12.0"
@@ -291,6 +300,16 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
 
+[[package]]
+name = "crypto-common"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.2.1"
@@ -300,6 +319,22 @@ dependencies = [
  "hybrid-array",
 ]
 
+[[package]]
+name = "curve25519-dalek"
+version = "4.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.2.17",
+ "curve25519-dalek-derive",
+ "digest 0.10.7",
+ "fiat-crypto",
+ "rustc_version",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "curve25519-dalek-derive"
 version = "0.1.1"
@@ -322,14 +357,24 @@ dependencies = [
  "zeroize",
 ]
 
+[[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 0.1.7",
+]
+
 [[package]]
 name = "digest"
 version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4850db49bf08e663084f7fb5c87d202ef91a3907271aff24a94eb97ff039153c"
 dependencies = [
- "block-buffer",
- "crypto-common",
+ "block-buffer 0.12.0",
+ "crypto-common 0.2.1",
 ]
 
 [[package]]
@@ -339,9 +384,41 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
 dependencies = [
  "pkcs8",
+ "serde",
  "signature",
 ]
 
+[[package]]
+name = "ed25519-dalek"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70e796c081cee67dc755e1a36a0a172b897fab85fc3f6bc48307991f64e4eca9"
+dependencies = [
+ "curve25519-dalek",
+ "ed25519",
+ "serde",
+ "sha2 0.10.9",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "ed25519-zebra"
+version = "4.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "775765289f7c6336c18d3d66127527820dd45ffd9eb3b6b8ee4708590e6c20f5"
+dependencies = [
+ "curve25519-dalek",
+ "ed25519",
+ "hashbrown 0.16.1",
+ "pkcs8",
+ "rand_core 0.6.4",
+ "serde",
+ "sha2 0.10.9",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "either"
 version = "1.15.0"
@@ -370,6 +447,12 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
+[[package]]
+name = "fiat-crypto"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -388,12 +471,28 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
 
+[[package]]
+name = "foldhash"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
+
 [[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"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.17"
@@ -450,7 +549,7 @@ checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
  "allocator-api2",
  "equivalent",
- "foldhash",
+ "foldhash 0.1.5",
 ]
 
 [[package]]
@@ -458,6 +557,11 @@ name = "hashbrown"
 version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+dependencies = [
+ "allocator-api2",
+ "equivalent",
+ "foldhash 0.2.0",
+]
 
 [[package]]
 name = "heck"
@@ -712,7 +816,7 @@ dependencies = [
  "bitflags",
  "num-traits",
  "rand 0.9.2",
- "rand_chacha 0.9.0",
+ "rand_chacha",
  "rand_xorshift",
  "regex-syntax",
  "rusty-fork",
@@ -753,24 +857,13 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
 
-[[package]]
-name = "rand"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
-dependencies = [
- "libc",
- "rand_chacha 0.3.1",
- "rand_core 0.6.4",
-]
-
 [[package]]
 name = "rand"
 version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
- "rand_chacha 0.9.0",
+ "rand_chacha",
  "rand_core 0.9.5",
 ]
 
@@ -785,16 +878,6 @@ dependencies = [
  "rand_core 0.10.0",
 ]
 
-[[package]]
-name = "rand_chacha"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
-dependencies = [
- "ppv-lite86",
- "rand_core 0.6.4",
-]
-
 [[package]]
 name = "rand_chacha"
 version = "0.9.0"
@@ -1036,6 +1119,17 @@ dependencies = [
  "zmij",
 ]
 
+[[package]]
+name = "sha2"
+version = "0.10.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.2.17",
+ "digest 0.10.7",
+]
+
 [[package]]
 name = "sha2"
 version = "0.11.0-rc.5"
@@ -1044,7 +1138,7 @@ checksum = "7c5f3b1e2dc8aad28310d8410bd4d7e180eca65fca176c52ab00d364475d0024"
 dependencies = [
  "cfg-if",
  "cpufeatures 0.2.17",
- "digest",
+ "digest 0.11.2",
 ]
 
 [[package]]
@@ -1058,6 +1152,9 @@ name = "signature"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
+dependencies = [
+ "rand_core 0.6.4",
+]
 
 [[package]]
 name = "solana-curve25519-cuda"
@@ -1065,9 +1162,6 @@ version = "0.1.0"
 dependencies = [
  "cc",
  "criterion",
- "rand 0.8.5",
- "rand_chacha 0.3.1",
- "rand_core 0.6.4",
  "rayon",
  "solana-ed25519",
  "which",
@@ -1083,8 +1177,10 @@ dependencies = [
  "criterion",
  "curve25519-dalek-derive",
  "der",
- "digest",
+ "digest 0.11.2",
  "ed25519",
+ "ed25519-dalek",
+ "ed25519-zebra",
  "hashbrown 0.15.5",
  "hex",
  "pkcs8",
@@ -1095,7 +1191,7 @@ dependencies = [
  "rustcrypto-ff",
  "rustcrypto-group",
  "serde",
- "sha2",
+ "sha2 0.11.0-rc.5",
  "subtle",
  "zeroize",
 ]
@@ -1191,6 +1287,12 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
 
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
+
 [[package]]
 name = "wait-timeout"
 version = "0.2.1"
diff --git a/Cargo.toml b/Cargo.toml
index 79f9e59..57e11d9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,3 +8,34 @@ resolver = "2"
 [profile.dev]
 opt-level = 2
 
+
+[workspace.dependencies]
+bincode = "1"
+cc = "1.0"
+cfg-if = "1"
+criterion = { version = "0.5", features = ["html_reports"] }
+# Keep the dependency key as "curve25519" so that all existing `use curve25519::…`
+# references in source files remain valid; the actual package is solanacurve25519.
+curve25519 = { path = "curve25519/solana-ed25519", package = "solana-ed25519" }
+curve25519-dalek-derive = "0.1.1"
+cpufeatures = "0.2.17"
+der = "0.7.9"
+digest = { version = "0.11.0-rc.4", default-features = false, features = ["block-api"] }
+ed25519 = { version = "2.2.3", default-features = false }
+ed25519-dalek = "2.2.0"
+ed25519-zebra = "4.2.0"
+ff = { version = "=0.14.0-pre.0", package = "rustcrypto-ff", default-features = false }
+group = { version = "=0.14.0-pre.0", package = "rustcrypto-group", default-features = false }
+hashbrown = "0.15"
+hex = "0.4.2"
+pkcs8 = { version = "0.10.1", features = ["pem"] }
+proptest = "1"
+rand = "0.10.0-rc.5"
+rand_core = { version = "0.10.0-rc-3", default-features = false }
+rayon = "1.10"
+rustc_version = "0.4.0"
+serde = { version = "1.0", default-features = false, features = ["derive"] }
+sha2 = { version = "0.11.0-rc.3", default-features = false }
+subtle = { version = "2.6.0", default-features = false, features = ["const-generics"] }
+which = "4.4"
+zeroize = { version = "1", default-features = false, features = ["derive"] }
\ No newline at end of file
diff --git a/curve25519/curve25519-cuda/Cargo.toml b/curve25519/curve25519-cuda/Cargo.toml
index 84cc50a..a1fb8af 100644
--- a/curve25519/curve25519-cuda/Cargo.toml
+++ b/curve25519/curve25519-cuda/Cargo.toml
@@ -5,20 +5,15 @@ edition = "2024"
 authors = ["Anza Cryptography Team"]
 
 [dependencies]
-# Keep the dependency key as "curve25519" so that all existing `use curve25519::…`
-# references in source files remain valid; the actual package is curve25519-sol.
-curve25519 = { path = "../solana-ed25519", package = "solana-ed25519" }
-rand = "0.8"
-rand_chacha = "0.3"
-rand_core = "0.6"
-rayon = "1.10"
+curve25519.workspace = true
+rayon.workspace = true
 
 [build-dependencies]
-cc = "1.0"
-which = "4.4"
+cc.workspace = true
+which.workspace = true
 
 [dev-dependencies]
-criterion = "0.5"
+criterion.workspace = true
 
 [[bench]]
 name = "msm"
diff --git a/curve25519/solana-ed25519/Cargo.toml b/curve25519/solana-ed25519/Cargo.toml
index 7ec4505..e24e80d 100644
--- a/curve25519/solana-ed25519/Cargo.toml
+++ b/curve25519/solana-ed25519/Cargo.toml
@@ -30,14 +30,16 @@ rustdoc-args = [
 all-features = true
 
 [dev-dependencies]
-bincode = "1"
-criterion = { version = "0.5", features = ["html_reports"] }
-hex = "0.4.2"
-proptest = "1"
-rand = "0.10.0-rc.5"
+bincode.workspace = true
+criterion.workspace = true
+ed25519-dalek.workspace = true
+ed25519-zebra.workspace = true
+hex.workspace = true
+proptest.workspace = true
+rand.workspace = true
 
 [build-dependencies]
-rustc_version = "0.4.0"
+rustc_version.workspace = true
 
 [[bench]]
 name = "dalek_benchmarks"
@@ -45,29 +47,23 @@ harness = false
 required-features = ["alloc"]
 
 [dependencies]
-cfg-if = "1"
-ed25519 = { version = "2.2.3", default-features = false }
-ff = { version = "=0.14.0-pre.0", package = "rustcrypto-ff", default-features = false, optional = true }
-group = { version = "=0.14.0-pre.0", package = "rustcrypto-group", default-features = false, optional = true }
-rand_core = { version = "0.10.0-rc-3", default-features = false, optional = true }
-digest = { version = "0.11.0-rc.4", default-features = false, optional = true, features = [
-    "block-api",
-] }
-hashbrown = { version = "0.15" }
-der = { version = "0.7.9", optional = true }
-pkcs8 = { version = "0.10.1", optional = true, features = ["pem"] }
-sha2 = { version = "0.11.0-rc.3", default-features = false }
-subtle = { version = "2.6.0", default-features = false, features = [
-    "const-generics",
-] }
-serde = { version = "1.0", default-features = false, optional = true, features = [
-    "derive",
-] }
-zeroize = { version = "1", default-features = false, optional = true, features = ["derive"] }
+cfg-if.workspace = true
+ed25519.workspace = true
+ff = { workspace = true, optional = true }
+group = { workspace = true, optional = true }
+rand_core = { workspace = true, optional = true }
+digest = { workspace = true, optional = true }
+hashbrown.workspace = true
+der = { workspace = true, optional = true }
+pkcs8 = { workspace = true, optional = true }
+sha2.workspace = true
+subtle.workspace = true
+serde = { workspace = true, optional = true }
+zeroize = { workspace = true, optional = true }
 
 [target.'cfg(target_arch = "x86_64")'.dependencies]
-cpufeatures = "0.2.17"
-curve25519-dalek-derive = "0.1.1"
+cpufeatures = { workspace = true }
+curve25519-dalek-derive = { workspace = true }
 
 [features]
 default = ["alloc", "precomputed-tables", "zeroize", "rand_core", "digest"]