diff --git a/Cargo.lock b/Cargo.lock
index e9b8443..b1e60ae 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9,7 +9,7 @@ dependencies = [
  "axum",
  "chrono",
  "hex",
- "rand 0.8.5",
+ "rand",
  "reqwest",
  "serde",
  "serde_json",
@@ -887,7 +887,7 @@ dependencies = [
  "bytes",
  "getrandom 0.3.4",
  "lru-slab",
- "rand 0.9.4",
+ "rand",
  "ring",
  "rustc-hash",
  "rustls",
@@ -934,35 +934,14 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
-[[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 = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea"
 dependencies = [
- "rand_chacha 0.9.0",
- "rand_core 0.9.5",
-]
-
-[[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",
+ "rand_chacha",
+ "rand_core",
 ]
 
 [[package]]
@@ -972,16 +951,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
- "rand_core 0.9.5",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-dependencies = [
- "getrandom 0.2.17",
+ "rand_core",
 ]
 
 [[package]]
diff --git a/src/api/rust/Cargo.toml b/src/api/rust/Cargo.toml
index e2b80e9..aa1d93b 100644
--- a/src/api/rust/Cargo.toml
+++ b/src/api/rust/Cargo.toml
@@ -40,7 +40,7 @@ uuid         = { version = "1", features = ["v4"] }
 # Timestamps — RFC 3339 issued_at fields
 chrono       = { version = "0.4", default-features = false, features = ["clock"] }
 # Timing jitter (1–8 ms) in verb governance to defeat timing analysis
-rand         = "0.8"
+rand         = "0.10"
 # Tower middleware layer compatibility
 tower        = "0.4"
 tower-http   = { version = "0.5", features = ["trace"] }