diff --git a/Cargo.lock b/Cargo.lock
index cd5a422a..55fb059e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -890,7 +890,7 @@ dependencies = [
  "predicates",
  "pretty_assertions",
  "proptest",
- "rand 0.9.0",
+ "rand 0.9.1",
  "rand_distr",
  "rayon",
  "shadow-rs",
@@ -1062,13 +1062,12 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.9.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3779b94aeb87e8bd4e834cee3650289ee9e0d5677f976ecdb6d219e5f4f6cd94"
+checksum = "9fbfd9d094a40bf3ae768db9361049ace4c0e04a4fd6b359518bd7b73a73dd97"
 dependencies = [
  "rand_chacha 0.9.0",
  "rand_core 0.9.3",
- "zerocopy",
 ]
 
 [[package]]
@@ -1116,7 +1115,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a8615d50dcf34fa31f7ab52692afec947c4dd0ab803cc87cb3b0b4570ff7463"
 dependencies = [
  "num-traits",
- "rand 0.9.0",
+ "rand 0.9.1",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index c9b96496..6b9b7ee5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ clap = { version = "4.5.15", features = ["derive", "wrap_help"] }
 indicatif = "0.17.8"
 itertools = "0.13.0"
 # Use SmallRng for performance.
-rand = { version = "0.9.0", features = ["small_rng"] }
+rand = { version = "0.9.1", features = ["small_rng"] }
 rand_distr = "0.5.1"
 rayon = "1.10.0"
 shadow-rs = "1.0.1"
@@ -40,7 +40,7 @@ shakmaty = "0.27.1"
 shakmaty-syzygy = "0.25.0"
 
 [build-dependencies]
-rand = "0.9.0"
+rand = "0.9.1"
 shadow-rs = "1.0.1"
 
 [dev-dependencies]