diff --git a/.github/workflows/reusable-cpp-linter.yml b/.github/workflows/reusable-cpp-linter.yml
index a7890f4..6f43396 100644
--- a/.github/workflows/reusable-cpp-linter.yml
+++ b/.github/workflows/reusable-cpp-linter.yml
@@ -46,6 +46,10 @@ on:
         description: "Packages to install in the Python virtual environment as a comma-separated list"
         default: ""
         type: string
+      cpp-linter-ignore-extra:
+        description: "Extra pipe-separated ignore globs for cpp-linter (e.g., 'plugin/**|subdir/third_party/**')"
+        default: ""
+        type: string
 
 jobs:
   lint:
@@ -152,7 +156,11 @@ jobs:
           style: ""
           tidy-checks: ""
           version: ${{ inputs.clang-version }}
-          ignore: "build|!build/mlir/**|**/include|include"
+          ignore: ${{ format(
+            'build|!build/mlir/**|**/include|include{0}{1}',
+            inputs.cpp-linter-ignore-extra != '' && '|' || '',
+            inputs.cpp-linter-ignore-extra
+            ) }}
           thread-comments: ${{ github.event_name == 'pull_request' && 'update' }}
           step-summary: true
           database: "build"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33a910e..e5d0be9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,12 @@ This project adheres to [Semantic Versioning], with the exception that minor rel
 
 ## [1.17.3] - 2025-11-26
 
+_If you are upgrading: please see [`UPGRADING.md`](UPGRADING.md#1173)._
+
+### Added
+
+- ✨ Add optional `cpp-linter-ignore-extra` input to allow ignoring additional files in C++ linter ([#241]) ([**@flowerthrower**])
+
 ### Fixed
 
 - 🐍🚨 Ensure a locked version of `ty` is used when enabled to guarantee stability ([#255]) ([**@burgholzer**])
@@ -192,6 +198,7 @@ _📚 Refer to the [GitHub Release Notes] for previous changelogs._
 [#255]: https://github.com/munich-quantum-toolkit/workflows/pull/255
 [#254]: https://github.com/munich-quantum-toolkit/workflows/pull/254
 [#247]: https://github.com/munich-quantum-toolkit/workflows/pull/247
+[#241]: https://github.com/munich-quantum-toolkit/workflows/pull/241
 [#206]: https://github.com/munich-quantum-toolkit/workflows/pull/206
 [#188]: https://github.com/munich-quantum-toolkit/workflows/pull/188
 [#184]: https://github.com/munich-quantum-toolkit/workflows/pull/184
@@ -215,6 +222,7 @@ _📚 Refer to the [GitHub Release Notes] for previous changelogs._
 [**@burgholzer**]: https://github.com/burgholzer
 [**@ystade**]: https://github.com/ystade
 [**@denialhaag**]: https://github.com/denialhaag
+[**@flowerthrower**]: https://github.com/flowerthrower
 
 <!-- General links -->
 
diff --git a/UPGRADING.md b/UPGRADING.md
index 01bd230..20f3ddf 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -6,11 +6,25 @@ This document describes breaking changes and how to upgrade. For a complete list
 
 ## [1.17.3]
 
+### Type checking with `ty`
+
 This release fixes the `ty` linter workflow, which would always use the latest version of `ty` available on PyPI.
 As `ty` is still moving pretty fast and the latest version may not be stable yet, this was not ideal.
 This release changes the behavior to use the version of `ty` listed as a development dependency in `pyproject.toml`.
 If you have the `enable-ty` option set to `true` in your workflow configuration, you **must** add `ty` to your development dependencies or the workflow will fail.
 
+### Additional customization for the C++ linter
+
+This release adds the optional `cpp-linter-ignore-extra` input to the `reusable-cpp-linter.yml` workflow.
+This allows ignoring additional files in the C++ linter workflow by passing a pipe-separated list of globs.
+For example, to ignore all files in the `plugin` directory and the `subdir/third_party` directory, you can use the following configuration:
+
+```yaml
+uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-linter.yml@v1.17.3
+with:
+  cpp-linter-ignore-extra: "plugin/**|subdir/third_party/**"
+```
+
 ## [1.17.0]
 
 This release removes all CodeQL workflows because CodeQL is now run automatically by GitHub.
@@ -166,7 +180,8 @@ Consider removing any `-G Ninja` flags from your CMake invocations under Windows
 
 <!-- Version links -->
 
-[unreleased]: https://github.com/munich-quantum-toolkit/workflows/compare/v1.17.0...HEAD
+[unreleased]: https://github.com/munich-quantum-toolkit/workflows/compare/v1.17.3...HEAD
+[1.17.3]: https://github.com/munich-quantum-toolkit/workflows/compare/v1.17.0...v1.17.3
 [1.17.0]: https://github.com/munich-quantum-toolkit/workflows/compare/v1.16.0...v1.17.0
 [1.16.0]: https://github.com/munich-quantum-toolkit/workflows/compare/v1.15.0...v1.16.0
 [1.15.0]: https://github.com/munich-quantum-toolkit/workflows/compare/v1.14.0...v1.15.0