diff --git a/.github/workflows/engineering.yml b/.github/workflows/engineering.yml
index 0678644..9fa49d2 100644
--- a/.github/workflows/engineering.yml
+++ b/.github/workflows/engineering.yml
@@ -43,7 +43,7 @@ jobs:
         uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
         timeout-minutes: 3
         with:
-          node-version: 26.10.0
+          node-version: 26.11.1
           check-latest: false
           package-manager-cache: false
 
@@ -71,7 +71,7 @@ jobs:
       - name: Check toolchain versions and CI inputs
         timeout-minutes: 1
         run: |
-          test "$(node --version)" = v26.10.0
+          test "$(node --version)" = v26.11.1
           test "$(pnpm --version)" = 11.28.4
           test "$(rustc --version | cut -d ' ' -f 2)" = 1.99.0
           test "$(uv --version | cut -d ' ' -f 2)" = 0.12.24
@@ -172,7 +172,7 @@ jobs:
           report = {'schema_version': 1, 'source_sha': source,
                     'scope': 'Trusted engineering checks only', 'backend': backend,
                     'toolchains': {'python': '3.13.16', 'rust': '1.99.0',
-                                   'node': '26.10.0', 'pnpm': '11.28.4', 'uv': '0.12.24'},
+                                   'node': '26.11.1', 'pnpm': '11.28.4', 'uv': '0.12.24'},
                     'files': files,
                     'not_run': ['real PostgreSQL acceptance', 'independent VM cases',
                                 'user source execution', 'adverse archives and filesystem acceptance',
diff --git a/deploy/release/contract.v1.json b/deploy/release/contract.v1.json
index e3b1ad4..927684c 100644
--- a/deploy/release/contract.v1.json
+++ b/deploy/release/contract.v1.json
@@ -2,7 +2,7 @@
   "schema_version": 1,
   "format": "kf.single-node.directory.v1",
   "platform": "linux_x86_64_v3_glibc244_systemd",
-  "toolchains": {"python": "3.13.16", "rust": "1.99.0", "node": "26.10.0", "pnpm": "11.28.4"},
+  "toolchains": {"python": "3.13.16", "rust": "1.99.0", "node": "26.11.1", "pnpm": "11.28.4"},
   "capacity": {"memory_bytes": 4294967296, "disk_bytes": 12884901888, "execution_slots": 1, "import_slots": 1},
   "layout": {
     "releases": "/opt/kf-onlinejudge/releases",
diff --git a/scripts/release/policy.py b/scripts/release/policy.py
index dbc62c4..ebf8d22 100644
--- a/scripts/release/policy.py
+++ b/scripts/release/policy.py
@@ -12,7 +12,7 @@ MAX_FILE_BYTES = 256 * 1024 * 1024
 MAX_BUNDLE_BYTES = 4 * 1024**3
 FORMAT = "kf.single-node.directory.v1"
 PLATFORM = "linux_x86_64_v3_glibc244_systemd"
-TOOLCHAINS = {"python": "3.13.16", "rust": "1.99.0", "node": "26.10.0", "pnpm": "11.28.4"}
+TOOLCHAINS = {"python": "3.13.16", "rust": "1.99.0", "node": "26.11.1", "pnpm": "11.28.4"}
 ROOTS = (
     "backend/",
     "python/",