diff --git a/convert_kytea_model/Cargo.toml b/convert_kytea_model/Cargo.toml
index ac5fbd0..f537129 100644
--- a/convert_kytea_model/Cargo.toml
+++ b/convert_kytea_model/Cargo.toml
@@ -6,6 +6,4 @@ edition = "2021"
 [dependencies]
 clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto", features = ["kytea"] }  # MIT or Apache-2.0
-zstd = { version = "0.13", features = ["zstdmt"] }  # MIT
-# workaround: https://github.com/gyscos/zstd-rs/issues/270
-zstd-sys = "=2.0.9"
+zstd = { version = "0.13.2", features = ["zstdmt"] }  # MIT
diff --git a/evaluate/Cargo.toml b/evaluate/Cargo.toml
index 92529b7..90ccc77 100644
--- a/evaluate/Cargo.toml
+++ b/evaluate/Cargo.toml
@@ -7,6 +7,4 @@ edition = "2021"
 clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto" }  # MIT or Apache-2.0
 vaporetto_rules = { path = "../vaporetto_rules" }  # MIT or Apache-2.0
-zstd = "0.13"  # MIT
-# workaround: https://github.com/gyscos/zstd-rs/issues/270
-zstd-sys = "=2.0.9"
+zstd = "0.13.2"  # MIT
diff --git a/manipulate_model/Cargo.toml b/manipulate_model/Cargo.toml
index 7d2fd3b..9b5391a 100644
--- a/manipulate_model/Cargo.toml
+++ b/manipulate_model/Cargo.toml
@@ -8,6 +8,4 @@ clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 csv = "1.2"  # Unlicense or MIT
 serde = { version = "1.0", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto" }  # MIT or Apache-2.0
-zstd = { version = "0.13", features = ["zstdmt"] }  # MIT
-# workaround: https://github.com/gyscos/zstd-rs/issues/270
-zstd-sys = "=2.0.9"
+zstd = { version = "0.13.2", features = ["zstdmt"] }  # MIT
diff --git a/predict/Cargo.toml b/predict/Cargo.toml
index 2edcd48..5b9c6ce 100644
--- a/predict/Cargo.toml
+++ b/predict/Cargo.toml
@@ -8,6 +8,4 @@ atty = "0.2"  # MIT
 clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto" }  # MIT or Apache-2.0
 vaporetto_rules = { path = "../vaporetto_rules" }  # MIT or Apache-2.0
-zstd = "0.13"  # MIT
-# workaround: https://github.com/gyscos/zstd-rs/issues/270
-zstd-sys = "=2.0.9"
+zstd = "0.13.2"  # MIT
diff --git a/train/Cargo.toml b/train/Cargo.toml
index 5268b53..00a8510 100644
--- a/train/Cargo.toml
+++ b/train/Cargo.toml
@@ -7,6 +7,4 @@ edition = "2021"
 clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto", features = ["train"] }  # MIT or Apache-2.0
 vaporetto_rules = { path = "../vaporetto_rules" }  # MIT or Apache-2.0
-zstd = { version = "0.13", features = ["zstdmt"] }  # MIT
-# workaround: https://github.com/gyscos/zstd-rs/issues/270
-zstd-sys = "=2.0.9"
+zstd = { version = "0.13.2", features = ["zstdmt"] }  # MIT
diff --git a/vaporetto/Cargo.toml b/vaporetto/Cargo.toml
index e164df1..d50aa2a 100644
--- a/vaporetto/Cargo.toml
+++ b/vaporetto/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vaporetto"
-version = "0.6.3"
+version = "0.6.4"
 edition = "2021"
 rust-version = "1.75"
 authors = ["Koichi Akabe <vbkaisetsu@gmail.com>"]
@@ -15,7 +15,7 @@ categories = ["text-processing", "no-std"]
 [dependencies]
 bincode = { version = "2.0.0-rc.3", default-features = false, features = ["alloc", "derive"] }  # MIT
 daachorse = "1.0.0"  # MIT or Apache-2.0
-hashbrown = "0.14.0"  # MIT or Apache-2.0
+hashbrown = "0.15.0"  # MIT or Apache-2.0
 
 liblinear = { version = "1", optional = true }  # MIT
 
diff --git a/vaporetto/src/utils.rs b/vaporetto/src/utils.rs
index 51e3f11..edb4beb 100644
--- a/vaporetto/src/utils.rs
+++ b/vaporetto/src/utils.rs
@@ -12,7 +12,7 @@ use bincode::{
     error::{DecodeError, EncodeError},
     Decode, Encode,
 };
-use hashbrown::{hash_map::DefaultHashBuilder, HashMap};
+use hashbrown::{DefaultHashBuilder, HashMap};
 
 #[cfg(feature = "fix-weight-length")]
 #[inline(always)]
diff --git a/vaporetto_rules/Cargo.toml b/vaporetto_rules/Cargo.toml
index 50adc75..21ee1ba 100644
--- a/vaporetto_rules/Cargo.toml
+++ b/vaporetto_rules/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vaporetto_rules"
-version = "0.6.3"
+version = "0.6.4"
 edition = "2021"
 rust-version = "1.75"
 authors = ["Koichi Akabe <vbkaisetsu@gmail.com>"]
@@ -13,9 +13,9 @@ keywords = ["japanese", "analyzer", "tokenizer", "morphological"]
 categories = ["text-processing", "no-std"]
 
 [dependencies]
-hashbrown = "0.14.0"  # MIT or Apache-2.0
-unicode-segmentation = "1.10.1"  # MIT or Apache-2.0
-vaporetto = { path = "../vaporetto", version = "=0.6.3", default-features = false, features = ["alloc"] }  # MIT or Apache-2.0
+hashbrown = "0.15.0"  # MIT or Apache-2.0
+unicode-segmentation = "1.12.0"  # MIT or Apache-2.0
+vaporetto = { path = "../vaporetto", version = "=0.6.4", default-features = false, features = ["alloc"] }  # MIT or Apache-2.0
 
 [dev-dependencies]
-vaporetto = { path = "../vaporetto", version = "=0.6.3" }  # MIT or Apache-2.0
+vaporetto = { path = "../vaporetto", version = "=0.6.4" }  # MIT or Apache-2.0
diff --git a/vaporetto_tantivy/Cargo.toml b/vaporetto_tantivy/Cargo.toml
index ddd2414..9b49a6b 100644
--- a/vaporetto_tantivy/Cargo.toml
+++ b/vaporetto_tantivy/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vaporetto_tantivy"
-version = "0.22.0" # Match with Tantivy version number
+version = "0.22.1" # Match with Tantivy version number
 edition = "2021"
 rust-version = "1.75"
 authors = ["Koichi Akabe <vbkaisetsu@gmail.com>"]
@@ -13,9 +13,9 @@ keywords = ["japanese", "tokenizer", "tantivy"]
 categories = ["text-processing"]
 
 [dependencies]
-vaporetto = { path = "../vaporetto", version = "=0.6.3" }  # MIT or Apache-2.0
-vaporetto_rules = { path = "../vaporetto_rules", version = "=0.6.3" }  # MIT or Apache-2.0
+vaporetto = { path = "../vaporetto", version = "=0.6.4" }  # MIT or Apache-2.0
+vaporetto_rules = { path = "../vaporetto_rules", version = "=0.6.4" }  # MIT or Apache-2.0
 tantivy = "0.22"  # MIT
 
 [dev-dependencies]
-ruzstd = "0.7.0"  # MIT
+ruzstd = "0.7.2"  # MIT