diff --git a/.github/workflows/bundle-extension.yml b/.github/workflows/bundle-extension.yml
index 22b3aff..79ab102 100644
--- a/.github/workflows/bundle-extension.yml
+++ b/.github/workflows/bundle-extension.yml
@@ -16,7 +16,7 @@ jobs:
       - uses: astral-sh/setup-uv@v6
 
       - name: Vendorize Core Logic
-        run: uv run python-vendorize
+        run: uv run --only-group "build" python-vendorize
 
       - name: Get build script
         working-directory: packages/tree_clipper_addon/src
@@ -24,11 +24,11 @@ jobs:
 
       - name: Build Blender extension bundles
         working-directory: packages/tree_clipper_addon/src/tree_clipper_addon
-        run: uv run --python 3.11 ../blender_ext.py build
+        run: uv run --no-project --python 3.11 ../blender_ext.py build
 
       - name: Generate index.json for easy updates
         working-directory: packages/tree_clipper_addon/src/tree_clipper_addon
-        run: uv run --python 3.11 ../blender_ext.py server-generate --repo-dir=./
+        run: uv run --no-project --python 3.11 ../blender_ext.py server-generate --repo-dir=./
 
       - uses: actions/upload-artifact@v4
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31736f5..a2467f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,28 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.1.6] - 2026-02-26
+
+This release is a Banger.
+
+Tree Clipper already accepted exports from an earlier version of Tree Clipper, but the Blender version had to match exactly.
+That was very limiting, and we're now trying to be backward-compatible.
+
+Also worth highlighting: progress on third-party-defined properties.
+
+### Added
+
+- Support for Blender 5.1.
+- Backwards compatibility.
+
+### Changed
+
+### Fixed
+
+- Issues with properties registered by third-party addons.
+- Min/Max issue for certain subtypes in interface sockets.
+- Crytomatte nodes issues.
+
 ## [0.1.5] - 2026-01-23
 
 This version might be the first to be in the extension store.
diff --git a/packages/tree_clipper/pyproject.toml b/packages/tree_clipper/pyproject.toml
index 28f087d..1a2c7e9 100644
--- a/packages/tree_clipper/pyproject.toml
+++ b/packages/tree_clipper/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "tree-clipper"
-version = "0.1.5"
+version = "0.1.6"
 dependencies = []
 maintainers = [
     { name="Algebraic", email="tree.clipper@algebraic.games" },
diff --git a/packages/tree_clipper/src/tree_clipper/common.py b/packages/tree_clipper/src/tree_clipper/common.py
index b8f0ea5..34bc622 100644
--- a/packages/tree_clipper/src/tree_clipper/common.py
+++ b/packages/tree_clipper/src/tree_clipper/common.py
@@ -13,7 +13,7 @@
 # these fields are in the top level JSON object
 BLENDER_VERSION = "blender_version"
 TREE_CLIPPER_VERSION = "tree_clipper_version"
-CURRENT_TREE_CLIPPER_VERSION = "0.1.5"  # tested to match pyproject.toml
+CURRENT_TREE_CLIPPER_VERSION = "0.1.6"  # tested to match pyproject.toml
 MATERIAL_NAME = "name"
 TREES = "node_trees"
 EXTERNAL = "external"
diff --git a/packages/tree_clipper/tests/test_third_party_attributes.py b/packages/tree_clipper/tests/test_third_party_attributes.py
index 82d76be..ad4c68f 100644
--- a/packages/tree_clipper/tests/test_third_party_attributes.py
+++ b/packages/tree_clipper/tests/test_third_party_attributes.py
@@ -94,7 +94,7 @@ def test_third_party_only_exporter_has_it():
         try:
             diff_exports(before=before, import_report=import_report, after=after)
             assert False, "diff should be the properties"
-        except:
+        except AssertionError:
             pass
 
         register_third_party_properties()
@@ -125,7 +125,7 @@ def test_third_party_only_impoter_has_it():
         try:
             diff_exports(before=before, import_report=import_report, after=after)
             assert False, "diff should be the properties"
-        except:
+        except AssertionError:
             pass
 
     finally:
diff --git a/packages/tree_clipper/tests/util.py b/packages/tree_clipper/tests/util.py
index bad43ce..e086938 100644
--- a/packages/tree_clipper/tests/util.py
+++ b/packages/tree_clipper/tests/util.py
@@ -13,6 +13,9 @@
     TREES,
     NAME,
     DEFAULT_HINT,
+    TREE_CLIPPER_VERSION,
+    CURRENT_TREE_CLIPPER_VERSION,
+    BLENDER_VERSION,
 )
 from tree_clipper.id_data_getter import get_data_block_from_id_name
 from tree_clipper.export_nodes import ExportIntermediate, ExportParameters
@@ -261,9 +264,10 @@ def import_and_check_export(
     with open(export_file, "r") as f:
         expected_string = f.read()
 
-    diff = deepdiff.DeepDiff(
-        json.loads(expected_string), json.loads(string), math_epsilon=0.01
-    )
+    expected = json.loads(expected_string)
+    expected[TREE_CLIPPER_VERSION] = CURRENT_TREE_CLIPPER_VERSION
+    expected[BLENDER_VERSION] = bpy.app.version_string
+    diff = deepdiff.DeepDiff(expected, json.loads(string), math_epsilon=0.01)
 
     print(diff.pretty())
     assert diff == {}
diff --git a/packages/tree_clipper_addon/src/tree_clipper_addon/blender_manifest.toml b/packages/tree_clipper_addon/src/tree_clipper_addon/blender_manifest.toml
index 87e291f..95e5f79 100644
--- a/packages/tree_clipper_addon/src/tree_clipper_addon/blender_manifest.toml
+++ b/packages/tree_clipper_addon/src/tree_clipper_addon/blender_manifest.toml
@@ -3,7 +3,7 @@ schema_version = "1.0.0"
 # Example of manifest file for a Blender extension
 # Change the values according to your extension
 id = "tree_clipper"
-version = "0.1.5" # should match tree_clipper (core logic)
+version = "0.1.6" # should match tree_clipper (core logic)
 name = "Tree Clipper"
 tagline = "Export and import Blender node trees as JSON"
 maintainer = "Algebraic <tree.clipper@algebraic.games>"
diff --git a/pyproject.toml b/pyproject.toml
index d44e4c1..a4745e9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,10 @@ members = [
 ]
 
 [dependency-groups]
+build = [
+  "vendorize",
+  "pip>=25.3",
+]
 dev = [
   "fake-bpy-module>=20251003",
   "pytest>=9.0.1",
diff --git a/uv.lock b/uv.lock
index 6cc8dfe..59c236b 100644
--- a/uv.lock
+++ b/uv.lock
@@ -24,9 +24,9 @@ dependencies = [
     { name = "zstandard" },
 ]
 wheels = [
-    { url = "https://github.com/BradyAJohnston/dailybpy/releases/download/daily-2026-02-23/bpy-5.1.0b0-cp313-cp313-macosx_11_0_arm64.whl" },
-    { url = "https://github.com/BradyAJohnston/dailybpy/releases/download/daily-2026-02-23/bpy-5.1.0b0-cp313-cp313-manylinux_2_39_x86_64.whl" },
-    { url = "https://github.com/BradyAJohnston/dailybpy/releases/download/daily-2026-02-23/bpy-5.1.0b0-cp313-cp313-win_amd64.whl" },
+    { url = "https://github.com/BradyAJohnston/dailybpy/releases/download/daily-2026-02-25/bpy-5.1.0b0-cp313-cp313-macosx_11_0_arm64.whl" },
+    { url = "https://github.com/BradyAJohnston/dailybpy/releases/download/daily-2026-02-25/bpy-5.1.0b0-cp313-cp313-manylinux_2_39_x86_64.whl" },
+    { url = "https://github.com/BradyAJohnston/dailybpy/releases/download/daily-2026-02-25/bpy-5.1.0b0-cp313-cp313-win_amd64.whl" },
 ]
 
 [[package]]
@@ -242,7 +242,7 @@ wheels = [
 
 [[package]]
 name = "tree-clipper"
-version = "0.1.5"
+version = "0.1.6"
 source = { editable = "packages/tree_clipper" }
 
 [package.optional-dependencies]
@@ -286,6 +286,10 @@ dependencies = [
 ]
 
 [package.dev-dependencies]
+build = [
+    { name = "pip" },
+    { name = "vendorize" },
+]
 dev = [
     { name = "deepdiff" },
     { name = "fake-bpy-module" },
@@ -303,6 +307,10 @@ requires-dist = [
 ]
 
 [package.metadata.requires-dev]
+build = [
+    { name = "pip", specifier = ">=25.3" },
+    { name = "vendorize", git = "https://github.com/Vollkornaffe/python-vendorize.git?rev=f284834c558483542ba0886f992ae2b918c22ab3" },
+]
 dev = [
     { name = "deepdiff", specifier = ">=8.6.1" },
     { name = "fake-bpy-module", specifier = ">=20251003" },