From 2901ec019504512f714abc78be8022e008958e00 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Tue, 20 Oct 2026 03:13:15 +0000
Subject: [PATCH] chore(master): release 1.9.0

---
 .release-please-manifest.json |  2 +-
 CHANGELOG.md                  | 10 ++++++++++
 pyproject.toml                |  2 +-
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 91137173..6b9247d7 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  ".": "1.8.4",
+  ".": "1.9.0",
   "packages/loop_common": "0.0.2",
   "packages/loop_interpolation": "0.0.2",
   "packages/map2loop": "3.5.1",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a3b2b089..18a60ac5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## [1.9.0](https://github.com/Loop3D/LoopStructural/compare/v1.8.4...v1.9.0) (2026-10-20)
+
+
+### Features
+
+* **folds:** validate P2Fold on Bermagui and document gauss4 ([#349](https://github.com/Loop3D/LoopStructural/issues/349)) ([4bf2de1](https://github.com/Loop3D/LoopStructural/commit/4bf2de13bbd261db11d77dd7077654438c83f6ef))
+* **interp:** add P2Fold golden and accuracy regression coverage ([b1ca2cd](https://github.com/Loop3D/LoopStructural/commit/b1ca2cd7165ac1a0c0c7be2073225b73a62e2fd1))
+* **interpolation:** P2 phase 1 - P2FoldInterpolator ([#346](https://github.com/Loop3D/LoopStructural/issues/346)) ([a1cae84](https://github.com/Loop3D/LoopStructural/commit/a1cae847a0f9ef31cdf499a93a89d9e2742654d7))
+* **modelling:** allow P2Fold for folded foliations and fold frames ([388f34a](https://github.com/Loop3D/LoopStructural/commit/388f34a9920c0e2c4933d6c010c45ddbe9b287de))
+
 ## [1.8.4](https://github.com/Loop3D/LoopStructural/compare/v1.8.3...v1.8.4) (2026-10-05)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index d7e31179..ac4afd05 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = 'setuptools.build_meta'
 
 [project]
 name = 'LoopStructural'
-version = "1.8.4"
+version = "1.9.0"
 description = '3D geological modelling'
 authors = [{ name = 'Lachlan Grose', email = 'lachlan.grose@monash.edu' }]
 readme = 'README.md'