diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3ac6b98..6c39bcd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,7 +50,7 @@ jobs:
           toolchain: ${{ matrix.rust }}
           override: true
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -106,7 +106,7 @@ jobs:
           target: aarch64-unknown-none
           override: true
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
diff --git a/Cargo.toml b/Cargo.toml
index 78f59df..510b8b0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,13 +13,13 @@ license = "MIT/Apache-2.0"
 edition = "2021"
 
 [dependencies]
-rand = { version = "0.8", default-features = false, features = ["std_rng"]}
+rand = { version = "0.9", default-features = false, features = ["std_rng"]}
 rayon = { version = "1", optional = true }
 colored = { version = "2", optional = true }
 num-traits = { version = "0.2", default-features = false }
 
 [dev-dependencies]
-rand = { version = "0.8", features = ["std"]}
+rand = { version = "0.9", features = ["std"]}
 
 
 [features]
diff --git a/src/rand_helper.rs b/src/rand_helper.rs
index 6af19c5..b56c499 100644
--- a/src/rand_helper.rs
+++ b/src/rand_helper.rs
@@ -1,7 +1,7 @@
 #[cfg(feature = "std")]
 use rand::RngCore;
 use rand::{
-    distributions::{Distribution, Standard},
+    distr::{Distribution, StandardUniform},
     prelude::StdRng,
     Rng,
 };
@@ -14,11 +14,11 @@ pub trait UniformRand: Sized {
 
 impl<T> UniformRand for T
 where
-    Standard: Distribution<T>,
+    StandardUniform: Distribution<T>,
 {
     #[inline]
     fn rand<R: Rng + ?Sized>(rng: &mut R) -> Self {
-        rng.sample(Standard)
+        rng.sample(StandardUniform)
     }
 }
 
@@ -48,7 +48,7 @@ pub fn test_rng() -> impl rand::Rng {
         if is_deterministic {
             RngWrapper::Deterministic(test_rng_helper())
         } else {
-            RngWrapper::Randomized(rand::thread_rng())
+            RngWrapper::Randomized(rand::rng())
         }
     }
     #[cfg(not(any(feature = "getrandom", test)))]
@@ -93,15 +93,6 @@ impl RngCore for RngWrapper {
             Self::Randomized(rng) => rng.fill_bytes(dest),
         }
     }
-
-    #[inline(always)]
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand::Error> {
-        match self {
-            Self::Deterministic(rng) => rng.try_fill_bytes(dest),
-            #[cfg(any(feature = "getrandom", test))]
-            Self::Randomized(rng) => rng.try_fill_bytes(dest),
-        }
-    }
 }
 
 #[cfg(all(test, feature = "std"))]