diff --git a/CITATION.cff b/CITATION.cff
index 88711b7..2eec411 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -10,8 +10,8 @@ authors:
     email: "nikolina.sarcevic@gmail.com"
     orcid: "https://orcid.org/0000-0001-7301-6415"
 
-version: "0.2.0"
-date-released: 2026-05-15
+version: "0.5.1.dev0+g8dbb26ee5.d20260615"
+date-released: 2026-06-15
 
 repository-code: "https://github.com/cosmo-hub/lfkit"
 url: "https://github.com/cosmo-hub/lfkit"
diff --git a/README.md b/README.md
index bc6a30f..aa9e74f 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ If you use **LFKit** in your research, please cite it.
   title   = {LFKit: Luminosity functions and photometric corrections toolkit},
   author  = {Šarčević, Nikolina},
   year    = {2026},
-  version = {0.1.4},
+  version = {0.5.1.dev0+g8dbb26ee5.d20260615},
   url     = {https://github.com/cosmology-kit/lfkit}
 }
 ```
diff --git a/pyproject.toml b/pyproject.toml
index 74af1e1..6f48ecf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -194,3 +194,11 @@ commands = [
     "{tox_root}/docs/_build/html/index.html",
   ],
 ]
+
+[tool.tox.env.sync-release-metadata]
+description = "Sync CITATION.cff and README.md release metadata"
+skip_install = true
+deps = ["setuptools-scm>=8"]
+commands = [
+  ["python", "tools/sync_release_metadata.py"],
+]
diff --git a/tools/sync_release_metadata.py b/tools/sync_release_metadata.py
new file mode 100644
index 0000000..52fa524
--- /dev/null
+++ b/tools/sync_release_metadata.py
@@ -0,0 +1,66 @@
+"""Sync release metadata into CITATION.cff and README.md."""
+
+from __future__ import annotations
+
+import argparse
+import re
+import subprocess
+from datetime import date
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+CITATION = ROOT / "CITATION.cff"
+README = ROOT / "README.md"
+
+
+def get_version() -> str:
+    """Return version from setuptools-scm."""
+    result = subprocess.run(
+        ["python", "-m", "setuptools_scm"],
+        cwd=ROOT,
+        check=True,
+        text=True,
+        capture_output=True,
+    )
+    return result.stdout.strip().removeprefix("v")
+
+
+def main() -> None:
+    """Sync release metadata files."""
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--version", default=get_version())
+    parser.add_argument("--date", default=date.today().isoformat())
+    args = parser.parse_args()
+
+    version = args.version.removeprefix("v")
+
+    citation_text = CITATION.read_text()
+    citation_text = re.sub(
+        r'^version:\s*".*"$',
+        f'version: "{version}"',
+        citation_text,
+        flags=re.MULTILINE,
+    )
+    citation_text = re.sub(
+        r"^date-released:\s*.*$",
+        f"date-released: {args.date}",
+        citation_text,
+        flags=re.MULTILINE,
+    )
+    CITATION.write_text(citation_text)
+
+    readme_text = README.read_text()
+    readme_text = re.sub(
+        r"(version\s*=\s*\{)[^}]+(\})",
+        rf"\g<1>{version}\2",
+        readme_text,
+        count=1,
+    )
+    README.write_text(readme_text)
+
+    print(f"Synced CITATION.cff and README.md to {version} dated {args.date}")
+
+
+if __name__ == "__main__":
+    main()