diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5440935b37..d1196084a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ of panicking drop implementations.
 - Added `from_bytes_truncating_at_nul` to `CString`
 - Added `CString::{into_bytes, into_bytes_with_nul, into_string}`
 - Added `pop_front_if` and `pop_back_if` to `Deque`
+- Bump hash32 dependency to v1.0.0.
 
 ## [v0.9.2] 2025-11-12
 
diff --git a/Cargo.toml b/Cargo.toml
index 3524c533b5..f975f9b556 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -64,7 +64,7 @@ nightly = []
 [dependencies]
 bytes = { version = "1", default-features = false, optional = true }
 portable-atomic = { version = "1.0", optional = true }
-hash32 = "0.3.0"
+hash32 = "1.0.0"
 serde_core = { version = "1", optional = true, default-features = false }
 ufmt = { version = "0.2", optional = true }
 ufmt-write = { version = "0.1", optional = true }
diff --git a/src/index_map.rs b/src/index_map.rs
index cd6e30b4cd..05641c08ae 100644
--- a/src/index_map.rs
+++ b/src/index_map.rs
@@ -2,7 +2,7 @@
 use core::{
     borrow::Borrow,
     fmt,
-    hash::{BuildHasher, Hash},
+    hash::{BuildHasher, BuildHasherDefault, Hash},
     iter::FusedIterator,
     mem,
     num::NonZeroU32,
@@ -12,7 +12,7 @@ use core::{
 #[cfg(feature = "zeroize")]
 use zeroize::Zeroize;
 
-use hash32::{BuildHasherDefault, FnvHasher};
+use hash32::FnvHasher;
 
 use crate::Vec;
 
diff --git a/src/index_set.rs b/src/index_set.rs
index 803fa29107..b4da1cfc12 100644
--- a/src/index_set.rs
+++ b/src/index_set.rs
@@ -2,13 +2,13 @@
 use core::{
     borrow::Borrow,
     fmt,
-    hash::{BuildHasher, Hash},
+    hash::{BuildHasher, BuildHasherDefault, Hash},
 };
 
 #[cfg(feature = "zeroize")]
 use zeroize::Zeroize;
 
-use hash32::{BuildHasherDefault, FnvHasher};
+use hash32::FnvHasher;
 
 use crate::index_map::{self, IndexMap};