diff --git a/poetry.lock b/poetry.lock
index 32a6496..5d1a86a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,10 +1,9 @@
-# This file is automatically @generated by Poetry and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
 
 [[package]]
 name = "colorama"
 version = "0.4.6"
 description = "Cross-platform colored terminal text."
-category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 files = [
@@ -16,7 +15,6 @@ files = [
 name = "contourpy"
 version = "1.0.7"
 description = "Python library for calculating contours of 2D quadrilateral grids"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -91,7 +89,6 @@ test-no-images = ["pytest"]
 name = "cycler"
 version = "0.11.0"
 description = "Composable style cycles"
-category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -103,7 +100,6 @@ files = [
 name = "decorator"
 version = "4.4.2"
 description = "Decorators for Humans"
-category = "main"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
 files = [
@@ -115,7 +111,6 @@ files = [
 name = "fonttools"
 version = "4.39.4"
 description = "Tools to manipulate font files"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -141,7 +136,6 @@ woff = ["brotli (>=1.0.1)", "brotlicffi (>=0.8.0)", "zopfli (>=0.1.4)"]
 name = "gensim"
 version = "4.3.1"
 description = "Python framework for fast Vector Space Modelling"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -186,7 +180,6 @@ test-win = ["POT", "cython", "mock", "pytest", "pytest-cov", "testfixtures"]
 name = "importlib-resources"
 version = "5.12.0"
 description = "Read resources from Python packages"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -205,7 +198,6 @@ testing = ["flake8 (<5)", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-chec
 name = "joblib"
 version = "1.2.0"
 description = "Lightweight pipelining with Python functions"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -217,7 +209,6 @@ files = [
 name = "julia"
 version = "0.6.0"
 description = "Julia/Python bridge with IPython support."
-category = "main"
 optional = false
 python-versions = ">=3.4"
 files = [
@@ -232,7 +223,6 @@ test = ["ipython", "mock", "numpy", "pytest (>=4.4)"]
 name = "karateclub"
 version = "1.3.3"
 description = "A general purpose library for community detection, network embedding, and graph mining research."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -257,7 +247,6 @@ tqdm = "*"
 name = "kiwisolver"
 version = "1.4.4"
 description = "A fast implementation of the Cassowary constraint solver"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -335,7 +324,6 @@ files = [
 name = "levenshtein"
 version = "0.21.1"
 description = "Python extension for computing string edit distances and similarities."
-category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -450,7 +438,6 @@ rapidfuzz = ">=2.3.0,<4.0.0"
 name = "llvmlite"
 version = "0.40.1rc1"
 description = "lightweight wrapper around basic LLVM functionality"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -484,7 +471,6 @@ files = [
 name = "matplotlib"
 version = "3.7.1"
 description = "Python plotting package"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -547,7 +533,6 @@ python-dateutil = ">=2.7"
 name = "networkx"
 version = "2.6.3"
 description = "Python package for creating and manipulating graphs and networks"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -566,7 +551,6 @@ test = ["codecov (>=2.1)", "pytest (>=6.2)", "pytest-cov (>=2.12)"]
 name = "numba"
 version = "0.57.0"
 description = "compiling Python code using LLVM"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -597,14 +581,13 @@ files = [
 ]
 
 [package.dependencies]
-llvmlite = ">=0.40.0dev0,<0.41"
+llvmlite = "==0.40.*"
 numpy = ">=1.21,<1.25"
 
 [[package]]
 name = "numpy"
 version = "1.22.4"
 description = "NumPy is the fundamental package for array computing with Python."
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -636,7 +619,6 @@ files = [
 name = "numpy-groupies"
 version = "0.9.22"
 description = "Optimised tools for group-indexing operations: aggregated sum and more."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -653,7 +635,6 @@ tests = ["pytest"]
 name = "packaging"
 version = "23.1"
 description = "Core utilities for Python packages"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -665,7 +646,6 @@ files = [
 name = "pandas"
 version = "1.3.5"
 description = "Powerful data structures for data analysis, time series, and statistics"
-category = "main"
 optional = false
 python-versions = ">=3.7.1"
 files = [
@@ -698,7 +678,7 @@ files = [
 
 [package.dependencies]
 numpy = [
-    {version = ">=1.17.3", markers = "platform_machine != \"aarch64\" and platform_machine != \"arm64\" and python_version < \"3.10\""},
+    {version = ">=1.17.3", markers = "(platform_machine != \"aarch64\" and platform_machine != \"arm64\") and python_version < \"3.10\""},
     {version = ">=1.19.2", markers = "platform_machine == \"aarch64\" and python_version < \"3.10\""},
     {version = ">=1.20.0", markers = "platform_machine == \"arm64\" and python_version < \"3.10\""},
     {version = ">=1.21.0", markers = "python_version >= \"3.10\""},
@@ -713,7 +693,6 @@ test = ["hypothesis (>=3.58)", "pytest (>=6.0)", "pytest-xdist"]
 name = "pillow"
 version = "9.5.0"
 description = "Python Imaging Library (Fork)"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -793,7 +772,6 @@ tests = ["check-manifest", "coverage", "defusedxml", "markdown2", "olefile", "pa
 name = "pygsp"
 version = "0.5.1"
 description = "Graph Signal Processing in Python"
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -815,7 +793,6 @@ test = ["coverage", "coveralls", "flake8"]
 name = "pyparsing"
 version = "3.0.9"
 description = "pyparsing module - Classes and methods to define and execute parsing grammars"
-category = "main"
 optional = false
 python-versions = ">=3.6.8"
 files = [
@@ -830,7 +807,6 @@ diagrams = ["jinja2", "railroad-diagrams"]
 name = "python-dateutil"
 version = "2.8.2"
 description = "Extensions to the standard Python datetime module"
-category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
 files = [
@@ -845,7 +821,6 @@ six = ">=1.5"
 name = "python-levenshtein"
 version = "0.21.1"
 description = "Python extension for computing string edit distances and similarities."
-category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -860,7 +835,6 @@ Levenshtein = "0.21.1"
 name = "python-louvain"
 version = "0.16"
 description = "Louvain algorithm for community detection"
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -875,7 +849,6 @@ numpy = "*"
 name = "pytz"
 version = "2023.3"
 description = "World timezone definitions, modern and historical"
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -887,7 +860,6 @@ files = [
 name = "rapidfuzz"
 version = "3.1.1"
 description = "rapid fuzzy string matching"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -992,7 +964,6 @@ full = ["numpy"]
 name = "ribs"
 version = "0.5.1"
 description = "A bare-bones Python library for quality diversity optimization."
-category = "main"
 optional = false
 python-versions = ">=3.7.0"
 files = [
@@ -1020,7 +991,6 @@ visualize = ["matplotlib (>=3.0.0)"]
 name = "rsurn"
 version = "0.3.0"
 description = ""
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = []
@@ -1028,15 +998,14 @@ develop = false
 
 [package.source]
 type = "git"
-url = "https://github.com/tsukuba-websci/rsurn"
-reference = "69c588ec018d3a7cd38e3f98dbb5417cdcdec172"
-resolved_reference = "69c588ec018d3a7cd38e3f98dbb5417cdcdec172"
+url = "https://github.com/tsukuba-websci/rsurn.git"
+reference = "295adbdb2f15bf1bf98eade4ed3239adf41ec6e8"
+resolved_reference = "295adbdb2f15bf1bf98eade4ed3239adf41ec6e8"
 
 [[package]]
 name = "scikit-learn"
 version = "1.2.2"
 description = "A set of python modules for machine learning and data mining"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -1079,7 +1048,6 @@ tests = ["black (>=22.3.0)", "flake8 (>=3.8.2)", "matplotlib (>=3.1.3)", "mypy (
 name = "scipy"
 version = "1.9.3"
 description = "Fundamental algorithms for scientific computing in Python"
-category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -1114,11 +1082,31 @@ dev = ["flake8", "mypy", "pycodestyle", "typing_extensions"]
 doc = ["matplotlib (>2)", "numpydoc", "pydata-sphinx-theme (==0.9.0)", "sphinx (!=4.1.0)", "sphinx-panels (>=0.5.2)", "sphinx-tabs"]
 test = ["asv", "gmpy2", "mpmath", "pytest", "pytest-cov", "pytest-xdist", "scikit-umfpack", "threadpoolctl"]
 
+[[package]]
+name = "seaborn"
+version = "0.12.2"
+description = "Statistical data visualization"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "seaborn-0.12.2-py3-none-any.whl", hash = "sha256:ebf15355a4dba46037dfd65b7350f014ceb1f13c05e814eda2c9f5fd731afc08"},
+    {file = "seaborn-0.12.2.tar.gz", hash = "sha256:374645f36509d0dcab895cba5b47daf0586f77bfe3b36c97c607db7da5be0139"},
+]
+
+[package.dependencies]
+matplotlib = ">=3.1,<3.6.1 || >3.6.1"
+numpy = ">=1.17,<1.24.0 || >1.24.0"
+pandas = ">=0.25"
+
+[package.extras]
+dev = ["flake8", "flit", "mypy", "pandas-stubs", "pre-commit", "pytest", "pytest-cov", "pytest-xdist"]
+docs = ["ipykernel", "nbconvert", "numpydoc", "pydata_sphinx_theme (==0.10.0rc2)", "pyyaml", "sphinx-copybutton", "sphinx-design", "sphinx-issues"]
+stats = ["scipy (>=1.3)", "statsmodels (>=0.10)"]
+
 [[package]]
 name = "semantic-version"
 version = "2.10.0"
 description = "A library implementing the 'SemVer' scheme."
-category = "main"
 optional = false
 python-versions = ">=2.7"
 files = [
@@ -1134,7 +1122,6 @@ doc = ["Sphinx", "sphinx-rtd-theme"]
 name = "six"
 version = "1.16.0"
 description = "Python 2 and 3 compatibility utilities"
-category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 files = [
@@ -1146,7 +1133,6 @@ files = [
 name = "sklearn"
 version = "0.0.post5"
 description = "deprecated sklearn package, use scikit-learn instead"
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -1157,7 +1143,6 @@ files = [
 name = "smart-open"
 version = "6.3.0"
 description = "Utils for streaming large files (S3, HDFS, GCS, Azure Blob Storage, gzip, bz2...)"
-category = "main"
 optional = false
 python-versions = ">=3.6,<4.0"
 files = [
@@ -1179,7 +1164,6 @@ webhdfs = ["requests"]
 name = "sortedcontainers"
 version = "2.4.0"
 description = "Sorted Containers -- Sorted List, Sorted Dict, Sorted Set"
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -1191,7 +1175,6 @@ files = [
 name = "threadpoolctl"
 version = "3.1.0"
 description = "threadpoolctl"
-category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1203,7 +1186,6 @@ files = [
 name = "tqdm"
 version = "4.65.0"
 description = "Fast, Extensible Progress Meter"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1224,7 +1206,6 @@ telegram = ["requests"]
 name = "zipp"
 version = "3.15.0"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1239,4 +1220,4 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "69e846d08d8aac71e5643d112d9dd5b76158a44e66c11a4e7769da6d77efc603"
+content-hash = "82d613ed95ac95652728a0e0198627e28c0f6d0f19421da887b5ee047d4296e0"
diff --git a/pyproject.toml b/pyproject.toml
index b63be74..faba226 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ numpy = "^1.22.0"
 karateclub = "1.3.3"
 ribs = "^0.5.1"
 tqdm = "^4.65.0"
-rsurn = {git = "https://github.com/tsukuba-websci/rsurn", rev = "69c588ec018d3a7cd38e3f98dbb5417cdcdec172"}
+rsurn = {git = "https://github.com/tsukuba-websci/rsurn.git", rev = "295adbdb2f15bf1bf98eade4ed3239adf41ec6e8"}
 julia = "0.6.0"
 sklearn = "^0.0.post5"
 matplotlib = "^3.7.1"