diff --git a/.github/workflows/cffconvert.yml b/.github/workflows/cffconvert.yml
new file mode 100644
index 000000000..60fd8f62b
--- /dev/null
+++ b/.github/workflows/cffconvert.yml
@@ -0,0 +1,22 @@
+name: cffconvert
+
+on:
+  push:
+    paths:
+      - CITATION.cff
+  pull_request:
+    paths:
+      - CITATION.cff        
+
+jobs:
+  validate:
+    name: "validate"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out a copy of the repository
+        uses: actions/checkout@v4
+
+      - name: Check whether the citation metadata from CITATION.cff is valid
+        uses: citation-file-format/cffconvert-github-action@2.0.0
+        with:
+          args: "--validate"
\ No newline at end of file
diff --git a/CITATION.cff b/CITATION.cff
new file mode 100644
index 000000000..e3bf96722
--- /dev/null
+++ b/CITATION.cff
@@ -0,0 +1,31 @@
+# YAML 1.2
+---
+# Metadata for citation of this software according to the CFF format (https://citation-file-format.github.io/)
+cff-version: 1.2.0
+title: "Scikit-tree: Modern decision-trees compatible with scikit-learn in Python."
+abstract: "scikit-tree is a scikit-learn compatible API for building state-of-the-art decision trees. These include unsupervised trees, oblique trees, uncertainty trees, quantile trees and causal trees."
+authors:
+  - given-names: Adam
+    family-names: Li
+    affiliation: "Department of Computer Science, Columbia University, New York, NY, USA"
+    orcid: "https://orcid.org/0000-0001-8421-365X"
+  - given-names: Sambit
+    family-names: Panda
+    affiliation: "Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA"
+    orcid: "https://orcid.org/0000-0001-8455-4243"
+  - given-names: Haoyin
+    family-names: Xu
+    affiliation: "Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA"
+    orcid: "https://orcid.org/0000-0001-8235-4950"
+type: software
+repository-code: "https://github.com/neurodata/scikit-tree"
+license: 'BSD-3-Clause'
+keywords:
+  - random forest
+  - oblique trees
+  - honest forests
+  - statisical learning
+  - machine learning
+message: >-
+  Please cite this software using the metadata from
+  'preferred-citation' in the CITATION.cff file.
diff --git a/README.md b/README.md
index 12076150c..ac815d9ec 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 [![codecov](https://codecov.io/gh/neurodata/scikit-tree/branch/main/graph/badge.svg?token=H1reh7Qwf4)](https://codecov.io/gh/neurodata/scikit-tree)
 [![PyPI Download count](https://img.shields.io/pypi/dm/scikit-tree.svg)](https://pypistats.org/packages/scikit-tree)
 [![Latest PyPI release](https://img.shields.io/pypi/v/scikit-tree.svg)](https://pypi.org/project/scikit-tree/)
+[![DOI](https://zenodo.org/badge/491260497.svg)](https://zenodo.org/doi/10.5281/zenodo.8412279)
 
 scikit-tree
 ===========
diff --git a/sktree/_lib/sklearn_fork b/sktree/_lib/sklearn_fork
index 6c7a5f44e..1adb20907 160000
--- a/sktree/_lib/sklearn_fork
+++ b/sktree/_lib/sklearn_fork
@@ -1 +1 @@
-Subproject commit 6c7a5f44eb4ec3bea5dd6a9e4d5db748d12b209e
+Subproject commit 1adb209077f12adac8f760196ae5260abab0cbdd
diff --git a/style_requirements.txt b/style_requirements.txt
new file mode 100644
index 000000000..c3fb899a6
--- /dev/null
+++ b/style_requirements.txt
@@ -0,0 +1,9 @@
+mypy
+black
+isort
+flake8
+bandit
+pydocstyle
+codespell
+toml
+cython-lint
\ No newline at end of file