diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7a8968..0bee30a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## 0.1.1 - 2026-06-16
+
+- Sync the vendored `hangulang` core to its v2 conversion-fidelity work
+  (commit `1d36315`). No Python API or payload-schema changes — additive only,
+  so `schema_version` stays `hangulang.semantic.v1`.
+- Hyperlinks now surface as `kind: "href"` inline nodes with a `uri` field in the
+  semantic payload (and `<href>` in DocLang XML, `[anchor](uri)` in Markdown).
+- In-text flow objects (tables, pictures, formulas) are positioned at their true
+  character offset within ordinary paragraphs.
+- Wider EqEdit→LaTeX symbol coverage; layout-failure and table-cell-collision
+  diagnostics surface through the loss report; OTSL grid size is capped.
+
 ## 0.1.0 - 2026-06-15
 
 - Publish the initial Python/Rust package release for HWP/HWPX conversion.
diff --git a/Cargo.toml b/Cargo.toml
index 1c55f79..9642343 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hangulang-python"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 license = "MIT"
 description = "PyO3 bindings for the hangulang document conversion engine"
diff --git a/pyproject.toml b/pyproject.toml
index 7af0b0d..950ea70 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "hangulang"
-version = "0.1.0"
+version = "0.1.1"
 description = "Python bindings and integrations for the Rust hangulang document conversion engine"
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/vendor/hangulang b/vendor/hangulang
index fc9c995..3397cb8 160000
--- a/vendor/hangulang
+++ b/vendor/hangulang
@@ -1 +1 @@
-Subproject commit fc9c995d236821ce121f20421fd5e11e2814cf4a
+Subproject commit 3397cb8f2472d58bfbe36d8f35fc8ece4c236d19