diff --git a/.github/workflows/vendor-upgrade.yml b/.github/workflows/vendor-upgrade.yml
index 56c1dc0..1dab3b0 100644
--- a/.github/workflows/vendor-upgrade.yml
+++ b/.github/workflows/vendor-upgrade.yml
@@ -151,6 +151,8 @@ jobs:
       - name: Create branch and commit changes
         if: steps.resolve-hash.outputs.NEEDS_UPDATE == 'true'
         id: create-branch
+        env:
+          PATCH: ${{ inputs.patch }}
         run: |
           SHORT="${{ steps.resolve-hash.outputs.short_hash }}"
           HASH="${{ steps.resolve-hash.outputs.commit_hash }}"
@@ -162,7 +164,6 @@ jobs:
 
           git checkout -b "$BRANCH_NAME"
 
-          PATCH="${{ inputs.patch }}"
           if [[ -n "$PATCH" ]]; then
             printf '%b' "$PATCH" > /tmp/vendor-upgrade.patch
             git apply /tmp/vendor-upgrade.patch
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b30787f..2f8aad5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.26.5] - 2026-10-23
+
+### Changed
+- Upgrade vendored TypeScript Go port (tsc/) to [`d2f9dd68cfff`](https://github.com/microsoft/TypeScript/commit/d2f9dd68cfff50ca3c2fdf3152f808fd9d4ca2d6)
+
 ## [0.26.4] - 2026-10-23
 
 ### Changed
@@ -473,6 +478,7 @@ Together these keep genuine import-time changes flagged while eliminating the la
 - Multi-stage Docker build
 - Automated vendor upgrade workflow
 
+[0.26.5]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.26.4...v0.26.5
 [0.26.4]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.26.3...v0.26.4
 [0.26.3]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.26.2...v0.26.3
 [0.26.2]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.26.1...v0.26.2
diff --git a/TSGO_COMMIT b/TSGO_COMMIT
index a7af551..951fcfa 100644
--- a/TSGO_COMMIT
+++ b/TSGO_COMMIT
@@ -1 +1 @@
-7e5d1c1c1de408086e2dd74cb42d5b9c6ba77461
\ No newline at end of file
+d2f9dd68cfff50ca3c2fdf3152f808fd9d4ca2d6
\ No newline at end of file
diff --git a/VERSION b/VERSION
index c5a2973..00b2de6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.26.4
\ No newline at end of file
+0.26.5
\ No newline at end of file