diff --git a/Cargo.toml b/Cargo.toml
index 0a087df..f028c22 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,7 +49,7 @@ tracing-flame = { version = "0.2.0", optional = true }
 hashbrown = "0.15.0"
 
 [dependencies.rand]
-version = "0.8.0"
+version = "0.9"
 
 [dependencies.nom]
 version = "^7.0.0"
@@ -90,4 +90,4 @@ name = "divan"
 harness = false
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
-getrandom = { version = "0.2.5", features = ["js"] } # needed for rand
+getrandom = { version = "0.3", features = ["wasm_js"] } # needed for rand
diff --git a/src/grammar.rs b/src/grammar.rs
index 396d4c3..68d7d81 100644
--- a/src/grammar.rs
+++ b/src/grammar.rs
@@ -7,7 +7,7 @@ use crate::production::Production;
 use crate::term::Term;
 #[cfg(feature = "ABNF")]
 use crate::ABNF;
-use rand::{rngs::StdRng, seq::SliceRandom, thread_rng, Rng, SeedableRng};
+use rand::{rng, rngs::StdRng, seq::IndexedRandom, Rng, SeedableRng};
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
@@ -428,7 +428,7 @@ impl Grammar {
     pub fn generate_callback(&self, f: impl Fn(&str, &str) -> bool) -> Result<String, Error> {
         // let seed: &[_] = &[1, 2, 3, 4];
         let mut seed: [u8; 32] = [0; 32];
-        thread_rng().fill(&mut seed);
+        rng().fill(&mut seed);
         let mut rng: StdRng = SeedableRng::from_seed(seed);
         self.generate_seeded_callback(&mut rng, f)
     }