diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 25da5c54..b117c33e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,9 +22,15 @@ jobs:
 
       - name: Tests (default features)
         run: cargo test --all --release
+
       - name: Tests (all features)
         run: cargo test --all --all-features --release
+
       - name: Formatting
         run: cargo fmt --all -- --check
+
       - name: Clippy
         run: cargo clippy --all-features
+
+      - name: Semantic versioning checks
+        uses: obi1kenobi/cargo-semver-checks-action@v2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d563b376..4bb48aa0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,19 +4,30 @@ Notable changes to this project are documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
-The `gltf` crate adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+The top-level `gltf` crate adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). Historically, semantic versioning has not applied to `gltf-json`. This is planned to change from version 2—see issue #409.
 
 ## Unreleased
 
+## [1.4.1] - 2024-05-09
+
+### Added
+
+- New functions `animation::Channel::index` and `animation::Sampler::index`.
+- New feature flag `allow_empty_texture` to avoid required extension checks.
+
 ### Fixed
-- Fix `attemt to to subtract with overflow`-panic in `size_hint()` of sparse accessor when collecting items.
-- Fix incorrect values returned from `size_hint()` in sparse accessor
-- Add support to read items from sparse accessor without base buffer view
+
+- Fix `attempt to to subtract with overflow`-panic in `size_hint()` of sparse accessor when collecting items.
+- Fix incorrect values returned from `size_hint()` in sparse accessor.
+- Add support to read items from sparse accessor without base buffer view.
 
 ### Changed
-- Update `image` to `0.25.0`. 
+
+- Update `image` to `0.25.0`.
+- Validation will now fail if a glTF document requires extensions that are not supported by the crate.
 
 ### Removed
+
 - Feature `image_jpeg_rayon` no longer needed, as `image 0.25.0` now uses `zune-jpeg` for jpeg decoding.
 
 ## [1.4.0] - 2023-12-17
diff --git a/Cargo.toml b/Cargo.toml
index 4f313766..a94a7add 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "gltf"
-version = "1.4.0"
+version = "1.4.1"
 authors = ["David Harvey-Macaulay <alteous@outlook.com>"]
 description = "glTF 2.0 loader"
 documentation = "https://docs.rs/gltf"
@@ -25,7 +25,7 @@ approx = "0.5"
 [dependencies]
 base64 = { optional = true, version = "0.13" }
 byteorder = "1.3"
-gltf-json = { path = "gltf-json", version = "1.4.0" }
+gltf-json = { path = "gltf-json", version = "=1.4.1" }
 lazy_static = "1"
 urlencoding = { optional = true, version = "2.1" }
 serde_json = { features = ["raw_value"], version = "1.0" }
diff --git a/README.md b/README.md
index 574d8e52..643d0b4b 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ By default, `gltf` ignores all `extras` and `names` included with glTF assets. Y
 
 ```toml
 [dependencies.gltf]
-version = "1.2"
+version = "1.4"
 features = ["extras", "names"]
 ```
 
diff --git a/gltf-derive/Cargo.toml b/gltf-derive/Cargo.toml
index 78c1d97a..30a1c5a7 100644
--- a/gltf-derive/Cargo.toml
+++ b/gltf-derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "gltf-derive"
-version = "1.4.0"
+version = "1.4.1"
 authors = ["David Harvey-Macaulay <alteous@outlook.com>"]
 description = "Internal macros for the gltf crate"
 repository = "https://github.com/gltf-rs/gltf"
diff --git a/gltf-json/Cargo.toml b/gltf-json/Cargo.toml
index ff91e69a..015510df 100644
--- a/gltf-json/Cargo.toml
+++ b/gltf-json/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "gltf-json"
-version = "1.4.0"
+version = "1.4.1"
 authors = ["David Harvey-Macaulay <alteous@outlook.com>"]
 description = "JSON parsing for the gltf crate"
 repository = "https://github.com/gltf-rs/gltf"
@@ -9,7 +9,7 @@ edition = "2021"
 rust-version = "1.61"
 
 [dependencies]
-gltf-derive = { path = "../gltf-derive", version = "1.4.0" }
+gltf-derive = { path = "../gltf-derive", version = "=1.4.1" }
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = { features = ["raw_value"], version = "1.0" }
diff --git a/src/accessor/util.rs b/src/accessor/util.rs
index b6d8c872..a9f027bd 100644
--- a/src/accessor/util.rs
+++ b/src/accessor/util.rs
@@ -114,12 +114,21 @@ impl<'a, T: Item> SparseIter<'a, T> {
     ///
     /// Here `base` is allowed to be `None` when the base buffer view is not explicitly specified.
     pub fn new(
+        base: Option<ItemIter<'a, T>>,
+        indices: SparseIndicesIter<'a>,
+        values: ItemIter<'a, T>,
+    ) -> Self {
+        Self::with_base_count(base, 0, indices, values)
+    }
+
+    /// Supplemental constructor.
+    pub fn with_base_count(
         base: Option<ItemIter<'a, T>>,
         base_count: usize,
         indices: SparseIndicesIter<'a>,
         values: ItemIter<'a, T>,
     ) -> Self {
-        SparseIter {
+        Self {
             base,
             base_count,
             indices: indices.peekable(),
@@ -354,7 +363,7 @@ impl<'a, 's, T: Item> Iter<'s, T> {
                     ItemIter::new(subslice, stride)
                 };
 
-                Some(Iter::Sparse(SparseIter::new(
+                Some(Iter::Sparse(SparseIter::with_base_count(
                     base_iter, base_count, index_iter, value_iter,
                 )))
             }