diff --git a/docs/api/hnsw_index.md b/docs/api/hnsw_index.md
index dc56f65..ab9ad9d 100644
--- a/docs/api/hnsw_index.md
+++ b/docs/api/hnsw_index.md
@@ -525,7 +525,7 @@ diff --git a/Cargo.toml b/Cargo.toml
 @@ -19,7 +19,7 @@ bincode = "1.3.3"
  rayon = "1.11.0"
  lazy_static = { version = "1.4.0", optional = true }
- bit-vec = { version = "0.8.0", features = ["serde"] }
+ bit-vec = { version = "0.9.1", features = ["serde"] }
 -rand = "0.9.0"
 +rand = "0.10.0"
  criterion = { version = "0.8.1", optional = true }
@@ -545,135 +545,18 @@ This change may affect random number generation and related functionalities. Use
 diff --git a/Cargo.lock b/Cargo.lock
 --- a/Cargo.lock
 +++ b/Cargo.lock
-@@ -250,6 +250,12 @@ version = "1.0.4"
- source = "registry+https://github.com/rust-lang/crates.io-index"
- checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
- 
-+[[package]]
-+name = "cfg_aliases"
-+version = "0.2.1"
-+source = "registry+https://github.com/rust-lang/crates.io-index"
-+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
-+
- [[package]]
- name = "chacha20"
- version = "0.10.0"
-@@ -661,9 +667,9 @@ dependencies = [
- 
- [[package]]
- name = "hnsw_rs"
--version = "0.3.3"
-+version = "0.3.4"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "22884c1debedfe585612f1f6da7bfe257f557639143cac270a8ac2f8702de750"
-+checksum = "43a5258f079b97bf2e8311ff9579e903c899dcbac0d9a138d62e9a066778bd07"
- dependencies = [
-  "anndists",
-  "anyhow",
-@@ -904,15 +910,6 @@ version = "2.7.6"
- source = "registry+https://github.com/rust-lang/crates.io-index"
- checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
- 
--[[package]]
--name = "memoffset"
--version = "0.7.1"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "5de893c32cde5f383baa4c04c5d6dbdd735cfd4a794b0debdb2bb1b421da5ff4"
--dependencies = [
-- "autocfg",
--]
--
- [[package]]
- name = "memoffset"
- version = "0.9.1"
-@@ -936,17 +933,17 @@ checksum = "e53debba6bda7a793e5f99b8dacf19e626084f525f7829104ba9898f367d85ff"
- 
- [[package]]
- name = "mmap-rs"
--version = "0.6.1"
-+version = "0.7.0"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "86968d85441db75203c34deefd0c88032f275aaa85cee19a1dcfff6ae9df56da"
-+checksum = "4ecce9d566cb9234ae3db9e249c8b55665feaaf32b0859ff1e27e310d2beb3d8"
- dependencies = [
-- "bitflags 1.3.2",
-+ "bitflags 2.10.0",
-  "combine",
-  "libc",
-  "mach2",
-  "nix",
-  "sysctl",
-- "thiserror 1.0.69",
-+ "thiserror 2.0.18",
-  "widestring",
-  "windows",
- ]
-@@ -968,15 +965,14 @@ dependencies = [
+@@ -160,9 +160,9 @@ dependencies = [
  
  [[package]]
- name = "nix"
--version = "0.26.4"
-+version = "0.30.1"
+ name = "bit-vec"
+-version = "0.8.0"
++version = "0.9.1"
  source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "598beaf3cc6fdd9a5dfb1630c2800c7acd31df7aaf0f565796fba2b53ca1af1b"
-+checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
+-checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
++checksum = "b71798fca2c1fe1086445a7258a4bc81e6e49dcd24c8d0dd9a1e57395b603f51"
  dependencies = [
-- "bitflags 1.3.2",
-+ "bitflags 2.10.0",
-  "cfg-if",
-+ "cfg_aliases",
-  "libc",
-- "memoffset 0.7.1",
-- "pin-utils",
+  "serde",
  ]
- 
- [[package]]
-@@ -1094,12 +1090,6 @@ dependencies = [
-  "windows-link",
- ]
- 
--[[package]]
--name = "pin-utils"
--version = "0.1.0"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
--
- [[package]]
- name = "plotters"
- version = "0.3.7"
-@@ -1179,7 +1169,7 @@ checksum = "8970a78afe0628a3e3430376fc5fd76b6b45c4d43360ffd6cdd40bdde72b682a"
- dependencies = [
-  "indoc",
-  "libc",
-- "memoffset 0.9.1",
-+ "memoffset",
-  "once_cell",
-  "portable-atomic",
-  "pyo3-build-config",
-@@ -1554,9 +1544,9 @@ dependencies = [
- 
- [[package]]
- name = "sysctl"
--version = "0.5.5"
-+version = "0.6.0"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "ec7dddc5f0fee506baf8b9fdb989e242f17e4b11c61dfbb0635b705217199eea"
-+checksum = "01198a2debb237c62b6826ec7081082d951f46dbb64b0e8c7649a452230d1dfc"
- dependencies = [
-  "bitflags 2.10.0",
-  "byteorder",
-diff --git a/Cargo.toml b/Cargo.toml
---- a/Cargo.toml
-+++ b/Cargo.toml
-@@ -11,7 +11,7 @@ crate-type = ["cdylib", "rlib"]
- 
- rust_annie_macros = { path = "rust_annie_macros/foo" }
- pyo3 = { version = "0.25.0" }
--hnsw_rs = "0.3.3"
-+hnsw_rs = "0.3.4"
- numpy = "0.25.0"
- ndarray = "0.16.1"
- serde = { version = "1.0.228", features = ["derive"] }
 ```
 
-This change may affect random number generation and related functionalities. Users should review their code to ensure compatibility with the new version of the `rand` crate.
\ No newline at end of file
+This change updates the `bit-vec` dependency to version `0.9.1`, ensuring compatibility with the latest features and improvements. Users should verify that their code is compatible with this version.
diff --git a/docs/api/threadsafe_index.md b/docs/api/threadsafe_index.md
index 94ffead..a13fa5d 100644
--- a/docs/api/threadsafe_index.md
+++ b/docs/api/threadsafe_index.md
@@ -192,4 +192,8 @@ The `criterion` dependency has been updated to version 0.8.0. Ensure that any pe
 
 ### Rand Crate Update
 
-The `rand` crate has been updated to version 0.10.0. Ensure that any random number generation in examples or tests is compatible with this new version. This update may include changes in API usage, so review the `rand` documentation for any necessary adjustments.
\ No newline at end of file
+The `rand` crate has been updated to version 0.10.0. Ensure that any random number generation in examples or tests is compatible with this new version. This update may include changes in API usage, so review the `rand` documentation for any necessary adjustments.
+
+### Bit-Vec Crate Update
+
+The `bit-vec` crate has been updated to version 0.9.1. Ensure that any usage of this crate in the code is compatible with the new version. This update may include changes in API usage, so review the `bit-vec` documentation for any necessary adjustments.
\ No newline at end of file