diff --git a/Cargo.lock b/Cargo.lock
index 71efa74..293770e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -296,7 +296,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "omikuji"
-version = "0.3.1"
+version = "0.3.2"
 dependencies = [
  "assert_approx_eq 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 68f7a78..7a0a429 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "omikuji"
 description = "an efficient implementation of Partitioned Label Treesand its variations for extreme multi-label classification"
-version = "0.3.1"
+version = "0.3.2"
 edition = "2018"
 authors = ["Tom Dong <tom.tung.dyb@gmail.com>"]
 license = "MIT"
diff --git a/c-api/Cargo.lock b/c-api/Cargo.lock
index 9faa6b1..600ea21 100644
--- a/c-api/Cargo.lock
+++ b/c-api/Cargo.lock
@@ -307,7 +307,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "omikuji"
-version = "0.3.1"
+version = "0.3.2"
 dependencies = [
  "hashbrown 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -327,12 +327,12 @@ dependencies = [
 
 [[package]]
 name = "omikuji_c-api"
-version = "0.3.1"
+version = "0.3.2"
 dependencies = [
  "cbindgen 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
- "omikuji 0.3.1",
+ "omikuji 0.3.2",
  "simple_logger 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
diff --git a/c-api/Cargo.toml b/c-api/Cargo.toml
index c19e914..f05284c 100644
--- a/c-api/Cargo.toml
+++ b/c-api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "omikuji_c-api"
-version = "0.3.1"
+version = "0.3.2"
 edition = "2018"
 authors = ["Tom Dong <tom.tung.dyb@gmail.com>"]
 
diff --git a/python-wrapper/omikuji/__init__.py b/python-wrapper/omikuji/__init__.py
index d5ffcc6..55d29a0 100644
--- a/python-wrapper/omikuji/__init__.py
+++ b/python-wrapper/omikuji/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.3.1"
+__version__ = "0.3.2"
 __all__ = ["Model", "LossType"]
 
 from ._libomikuji import lib, ffi
diff --git a/setup.py b/setup.py
index a291d17..c298e4a 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ def load_readme():
 
 setup(
     name="omikuji",
-    version="0.3.1",
+    version="0.3.2",
     author="Tom Dong",
     author_email="tom.tung.dyb@gmail.com",
     description=(