diff --git a/backend/Cargo.lock b/backend/Cargo.lock
index 8afd185ec..6bdaaf39e 100644
--- a/backend/Cargo.lock
+++ b/backend/Cargo.lock
@@ -675,7 +675,7 @@ dependencies = [
  "aead",
  "blake2",
  "crypto_secretbox",
- "curve25519-dalek",
+ "curve25519-dalek 4.1.3",
  "salsa20",
  "subtle",
  "zeroize",
@@ -714,8 +714,23 @@ dependencies = [
  "cfg-if",
  "cpufeatures 0.2.17",
  "curve25519-dalek-derive",
- "digest 0.10.7",
- "fiat-crypto",
+ "fiat-crypto 0.2.9",
+ "rustc_version",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "curve25519-dalek"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5eed333089e2e1c1ac8c6c0398e5e2497b4c9926ca6d0365ed1e099afa5bc23"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.0",
+ "curve25519-dalek-derive",
+ "digest 0.11.3",
+ "fiat-crypto 0.3.0",
  "rustc_version",
  "subtle",
  "zeroize",
@@ -767,6 +782,16 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "der"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a69dedd701da44b0536442edf09c81a64b0ab97a7a4a5e3d1971f00027cbc63d"
+dependencies = [
+ "const-oid 0.10.2",
+ "zeroize",
+]
+
 [[package]]
 name = "deranged"
 version = "0.5.8"
@@ -835,34 +860,35 @@ version = "0.16.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee27f32b5c5292967d2d4a9d7f1e0b0aed2c15daded5a60300e4abb9d8020bca"
 dependencies = [
- "der",
+ "der 0.7.10",
  "digest 0.10.7",
  "elliptic-curve",
  "rfc6979",
- "signature",
- "spki",
+ "signature 2.2.0",
+ "spki 0.7.3",
 ]
 
 [[package]]
 name = "ed25519"
-version = "2.2.3"
+version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
+checksum = "29fcf32e6c73d1079f83ab4d782de2d81620346a5f38c6237a86a22f8368980a"
 dependencies = [
- "pkcs8",
- "signature",
+ "pkcs8 0.11.0",
+ "signature 3.0.0",
 ]
 
 [[package]]
 name = "ed25519-dalek"
-version = "2.2.0"
+version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70e796c081cee67dc755e1a36a0a172b897fab85fc3f6bc48307991f64e4eca9"
+checksum = "6ebaa1a2bf1290ab3bfe5a7b771d050ebffab2711c19a81691c683a5144a25de"
 dependencies = [
- "curve25519-dalek",
+ "curve25519-dalek 5.0.0",
  "ed25519",
  "serde",
- "sha2 0.10.9",
+ "sha2 0.11.0",
+ "signature 3.0.0",
  "subtle",
  "zeroize",
 ]
@@ -889,7 +915,7 @@ dependencies = [
  "generic-array",
  "group",
  "pem-rfc7468",
- "pkcs8",
+ "pkcs8 0.10.2",
  "rand_core 0.6.4",
  "sec1",
  "subtle",
@@ -974,6 +1000,12 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
+[[package]]
+name = "fiat-crypto"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64cd1e32ddd350061ae6edb1b082d7c54915b5c672c389143b9a63403a109f24"
+
 [[package]]
 name = "filetime"
 version = "0.2.29"
@@ -1753,7 +1785,7 @@ dependencies = [
  "pem",
  "serde",
  "serde_json",
- "signature",
+ "signature 2.2.0",
  "simple_asn1",
  "zeroize",
 ]
@@ -2053,8 +2085,18 @@ version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f950b2377845cebe5cf8b5165cb3cc1a5e0fa5cfa3e1f7f55707d8fd82e0a7b7"
 dependencies = [
- "der",
- "spki",
+ "der 0.7.10",
+ "spki 0.7.3",
+]
+
+[[package]]
+name = "pkcs8"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "451913da69c775a56034ea8d9003d27ee8948e12443eae7c038ba100a4f21cb7"
+dependencies = [
+ "der 0.8.1",
+ "spki 0.8.0",
 ]
 
 [[package]]
@@ -2605,9 +2647,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3e97a565f76233a6003f9f5c54be1d9c5bdfa3eccfb189469f11ec4901c47dc"
 dependencies = [
  "base16ct",
- "der",
+ "der 0.7.10",
  "generic-array",
- "pkcs8",
+ "pkcs8 0.10.2",
  "subtle",
  "zeroize",
 ]
@@ -2803,6 +2845,12 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "signature"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d567dcbaf0049cb8ac2608a76cd95ff9e4412e1899d389ee400918ca7537f5"
+
 [[package]]
 name = "simd-adler32"
 version = "0.3.9"
@@ -2862,7 +2910,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d91ed6c858b01f942cd56b37a94b3e0a1798290327d1236e4d9cf4eaca44d29d"
 dependencies = [
  "base64ct",
- "der",
+ "der 0.7.10",
+]
+
+[[package]]
+name = "spki"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d9efca8738c78ee9484207732f728b1ef517bbb1833d6fc0879ca898a522f6f"
+dependencies = [
+ "base64ct",
+ "der 0.8.1",
 ]
 
 [[package]]
diff --git a/backend/crates/providers/openai/Cargo.toml b/backend/crates/providers/openai/Cargo.toml
index b39396ecd..c5d9564ed 100644
--- a/backend/crates/providers/openai/Cargo.toml
+++ b/backend/crates/providers/openai/Cargo.toml
@@ -15,7 +15,7 @@ bytes = "1.11.1"
 chrono = { version = "0.4.45", features = ["clock", "serde"] }
 cookie = "0.18.1"
 crypto_box = { version = "0.9.1", features = ["seal"] }
-ed25519-dalek = { version = "2.2.0", features = ["pkcs8"] }
+ed25519-dalek = { version = "3.0.0", features = ["alloc", "pkcs8"] }
 futures = "0.3.32"
 gateway-admin = { path = "../../gateway-admin" }
 gateway-core = { path = "../../gateway-core" }