diff --git a/.backportrc.json b/.backportrc.json
index 8ec087ab..358c26a0 100644
--- a/.backportrc.json
+++ b/.backportrc.json
@@ -8,7 +8,8 @@
   "prTitle": "{{sourcePullRequest.title}} (backport #{{sourcePullRequest.number}})",
   "targetBranchChoices": [
     "main",
-    "maintenance/v5.4"
+    "maintenance/v5.4",
+    "maintenance/v5.5"
   ],
   "//": "~~ Generated by projen. To modify, edit .projenrc.ts and run \"npx projen\"."
 }
diff --git a/.gitattributes b/.gitattributes
index 88fe0279..fef07882 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -9,8 +9,10 @@
 /.github/workflows/auto-approve.yml linguist-generated
 /.github/workflows/auto-merge.yml linguist-generated
 /.github/workflows/auto-tag-dev-v5.4.yml linguist-generated
+/.github/workflows/auto-tag-dev-v5.5.yml linguist-generated
 /.github/workflows/auto-tag-dev.yml linguist-generated
 /.github/workflows/auto-tag-releases-v5.4.yml linguist-generated
+/.github/workflows/auto-tag-releases-v5.5.yml linguist-generated
 /.github/workflows/auto-tag-releases.yml linguist-generated
 /.github/workflows/backport.yml linguist-generated
 /.github/workflows/build.yml linguist-generated
@@ -18,8 +20,10 @@
 /.github/workflows/release.yml linguist-generated
 /.github/workflows/upgrade-jsii-main.yml linguist-generated
 /.github/workflows/upgrade-jsii-maintenance-v5.4.yml linguist-generated
+/.github/workflows/upgrade-jsii-maintenance-v5.5.yml linguist-generated
 /.github/workflows/upgrade-main.yml linguist-generated
 /.github/workflows/upgrade-maintenance-v5.4.yml linguist-generated
+/.github/workflows/upgrade-maintenance-v5.5.yml linguist-generated
 /.gitignore linguist-generated
 /.npmignore linguist-generated
 /.prettierrc.json linguist-generated
diff --git a/.github/workflows/auto-tag-dev-v5.5.yml b/.github/workflows/auto-tag-dev-v5.5.yml
new file mode 100644
index 00000000..fda8071e
--- /dev/null
+++ b/.github/workflows/auto-tag-dev-v5.5.yml
@@ -0,0 +1,59 @@
+# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".
+
+name: auto-tag-dev-v5.5
+run-name: Auto-Tag Prerelease (v5.5)
+on:
+  schedule:
+    - cron: 0 10 * * 0,2-6
+  workflow_dispatch: {}
+jobs:
+  pre-flight:
+    name: Pre-Flight Checks
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    outputs:
+      sha: ${{ steps.git.outputs.sha }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: maintenance/v5.5
+          repository: ${{ github.repository }}
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: yarn
+          node-version: "18"
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+      - name: Build
+        run: yarn build
+      - name: Identify git SHA
+        id: git
+        run: echo sha=$(git rev-parse HEAD) >> $GITHUB_OUTPUT
+  auto-tag:
+    name: Auto-Tag Release
+    needs: pre-flight
+    runs-on: ubuntu-latest
+    permissions: {}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ needs.pre-flight.outputs.sha }}
+          repository: ${{ github.repository }}
+          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: yarn
+          node-version: "18"
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+      - name: Set git identity
+        run: |-
+          git config user.name "github-actions"
+          git config user.email "github-actions@github.com"
+      - name: Tag PreRelease
+        run: yarn tag-release --idempotent --no-sign --push --prerelease=dev --release-line=5.5
diff --git a/.github/workflows/auto-tag-dev.yml b/.github/workflows/auto-tag-dev.yml
index 09540917..a0cb8c3a 100644
--- a/.github/workflows/auto-tag-dev.yml
+++ b/.github/workflows/auto-tag-dev.yml
@@ -55,4 +55,4 @@ jobs:
           git config user.name "github-actions"
           git config user.email "github-actions@github.com"
       - name: Tag PreRelease
-        run: yarn tag-release --idempotent --no-sign --push --prerelease=dev --release-line=5.5
+        run: yarn tag-release --idempotent --no-sign --push --prerelease=dev --release-line=5.6
diff --git a/.github/workflows/auto-tag-releases-v5.5.yml b/.github/workflows/auto-tag-releases-v5.5.yml
new file mode 100644
index 00000000..14c65d11
--- /dev/null
+++ b/.github/workflows/auto-tag-releases-v5.5.yml
@@ -0,0 +1,59 @@
+# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".
+
+name: auto-tag-releases-v5.5
+run-name: Auto-Tag Release (v5.5)
+on:
+  schedule:
+    - cron: 0 10 * * 1
+  workflow_dispatch: {}
+jobs:
+  pre-flight:
+    name: Pre-Flight Checks
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    outputs:
+      sha: ${{ steps.git.outputs.sha }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: maintenance/v5.5
+          repository: ${{ github.repository }}
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: yarn
+          node-version: "18"
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+      - name: Build
+        run: yarn build
+      - name: Identify git SHA
+        id: git
+        run: echo sha=$(git rev-parse HEAD) >> $GITHUB_OUTPUT
+  auto-tag:
+    name: Auto-Tag Release
+    needs: pre-flight
+    runs-on: ubuntu-latest
+    permissions: {}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ needs.pre-flight.outputs.sha }}
+          repository: ${{ github.repository }}
+          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: yarn
+          node-version: "18"
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+      - name: Set git identity
+        run: |-
+          git config user.name "github-actions"
+          git config user.email "github-actions@github.com"
+      - name: Tag Release
+        run: yarn tag-release --idempotent --no-sign --push --release-line=5.5
diff --git a/.github/workflows/auto-tag-releases.yml b/.github/workflows/auto-tag-releases.yml
index 4ca26369..5534f023 100644
--- a/.github/workflows/auto-tag-releases.yml
+++ b/.github/workflows/auto-tag-releases.yml
@@ -55,4 +55,4 @@ jobs:
           git config user.name "github-actions"
           git config user.email "github-actions@github.com"
       - name: Tag Release
-        run: yarn tag-release --idempotent --no-sign --push --release-line=5.5
+        run: yarn tag-release --idempotent --no-sign --push --release-line=5.6
diff --git a/.github/workflows/upgrade-jsii-maintenance-v5.5.yml b/.github/workflows/upgrade-jsii-maintenance-v5.5.yml
new file mode 100644
index 00000000..cc85e153
--- /dev/null
+++ b/.github/workflows/upgrade-jsii-maintenance-v5.5.yml
@@ -0,0 +1,93 @@
+# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".
+
+name: upgrade-jsii-maintenance-v5.5
+on:
+  workflow_dispatch: {}
+  schedule:
+    - cron: 0 0 * * *
+jobs:
+  upgrade:
+    name: Upgrade
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    outputs:
+      patch_created: ${{ steps.create_patch.outputs.patch_created }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: maintenance/v5.5
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+      - name: Install dependencies
+        run: yarn install --check-files --frozen-lockfile
+      - name: Upgrade dependencies
+        run: npx projen upgrade-jsii
+      - name: Find mutations
+        id: create_patch
+        run: |-
+          git add .
+          git diff --staged --patch --exit-code > repo.patch || echo "patch_created=true" >> $GITHUB_OUTPUT
+        working-directory: ./
+      - name: Upload patch
+        if: steps.create_patch.outputs.patch_created
+        uses: actions/upload-artifact@v4.4.0
+        with:
+          name: repo.patch
+          path: repo.patch
+          overwrite: true
+  pr:
+    name: Create Pull Request
+    needs: upgrade
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    if: ${{ needs.upgrade.outputs.patch_created }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: maintenance/v5.5
+      - name: Download patch
+        uses: actions/download-artifact@v4
+        with:
+          name: repo.patch
+          path: ${{ runner.temp }}
+      - name: Apply patch
+        run: '[ -s ${{ runner.temp }}/repo.patch ] && git apply ${{ runner.temp }}/repo.patch || echo "Empty patch. Skipping."'
+      - name: Set git identity
+        run: |-
+          git config user.name "github-actions"
+          git config user.email "github-actions@github.com"
+      - name: Create Pull Request
+        id: create-pr
+        uses: peter-evans/create-pull-request@v6
+        with:
+          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
+          commit-message: |-
+            chore(deps): upgrade jsii & typescript
+
+            Upgrades project dependencies. See details in [workflow run].
+
+            [Workflow Run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+            ------
+
+            *Automatically created by projen via the "upgrade-jsii-maintenance-v5.5" workflow*
+          branch: github-actions/upgrade-jsii-maintenance-v5.5
+          title: "chore(deps): upgrade jsii & typescript"
+          labels: auto-approve
+          body: |-
+            Upgrades project dependencies. See details in [workflow run].
+
+            [Workflow Run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+            ------
+
+            *Automatically created by projen via the "upgrade-jsii-maintenance-v5.5" workflow*
+          author: github-actions <github-actions@github.com>
+          committer: github-actions <github-actions@github.com>
+          signoff: true
diff --git a/.github/workflows/upgrade-maintenance-v5.5.yml b/.github/workflows/upgrade-maintenance-v5.5.yml
new file mode 100644
index 00000000..201ce969
--- /dev/null
+++ b/.github/workflows/upgrade-maintenance-v5.5.yml
@@ -0,0 +1,97 @@
+# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".
+
+name: upgrade-maintenance-v5.5
+on:
+  workflow_dispatch: {}
+  schedule:
+    - cron: 0 0 * * *
+jobs:
+  upgrade:
+    name: Upgrade
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    outputs:
+      patch_created: ${{ steps.create_patch.outputs.patch_created }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: maintenance/v5.5
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+      - name: Install dependencies
+        run: yarn install --check-files --frozen-lockfile
+      - name: Back-port projenrc changes from main
+        env:
+          CI: "false"
+        run: git fetch origin main && git checkout FETCH_HEAD -- README.md && yarn projen
+      - name: Upgrade dependencies
+        run: npx projen upgrade
+      - name: Find mutations
+        id: create_patch
+        run: |-
+          git add .
+          git diff --staged --patch --exit-code > repo.patch || echo "patch_created=true" >> $GITHUB_OUTPUT
+        working-directory: ./
+      - name: Upload patch
+        if: steps.create_patch.outputs.patch_created
+        uses: actions/upload-artifact@v4.4.0
+        with:
+          name: repo.patch
+          path: repo.patch
+          overwrite: true
+  pr:
+    name: Create Pull Request
+    needs: upgrade
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    if: ${{ needs.upgrade.outputs.patch_created }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: maintenance/v5.5
+      - name: Download patch
+        uses: actions/download-artifact@v4
+        with:
+          name: repo.patch
+          path: ${{ runner.temp }}
+      - name: Apply patch
+        run: '[ -s ${{ runner.temp }}/repo.patch ] && git apply ${{ runner.temp }}/repo.patch || echo "Empty patch. Skipping."'
+      - name: Set git identity
+        run: |-
+          git config user.name "github-actions"
+          git config user.email "github-actions@github.com"
+      - name: Create Pull Request
+        id: create-pr
+        uses: peter-evans/create-pull-request@v6
+        with:
+          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
+          commit-message: |-
+            chore(deps): upgrade dependencies
+
+            Upgrades project dependencies. See details in [workflow run].
+
+            [Workflow Run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+            ------
+
+            *Automatically created by projen via the "upgrade-maintenance-v5.5" workflow*
+          branch: github-actions/upgrade-maintenance-v5.5
+          title: "chore(deps): upgrade dependencies"
+          labels: auto-approve
+          body: |-
+            Upgrades project dependencies. See details in [workflow run].
+
+            [Workflow Run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+            ------
+
+            *Automatically created by projen via the "upgrade-maintenance-v5.5" workflow*
+          author: github-actions <github-actions@github.com>
+          committer: github-actions <github-actions@github.com>
+          signoff: true
diff --git a/.gitignore b/.gitignore
index 575c4ebc..03de6f9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,8 +44,10 @@ jspm_packages/
 !/.eslintrc.json
 !/.github/workflows/upgrade-main.yml
 !/.github/workflows/upgrade-maintenance-v5.4.yml
+!/.github/workflows/upgrade-maintenance-v5.5.yml
 !/.github/workflows/upgrade-jsii-main.yml
 !/.github/workflows/upgrade-jsii-maintenance-v5.4.yml
+!/.github/workflows/upgrade-jsii-maintenance-v5.5.yml
 /build-tools/tsconfig.json
 /projenrc/tsconfig.json
 /test/tsconfig.json
@@ -59,6 +61,8 @@ jspm_packages/
 !/.github/workflows/auto-tag-releases.yml
 !/.github/workflows/auto-tag-dev-v5.4.yml
 !/.github/workflows/auto-tag-releases-v5.4.yml
+!/.github/workflows/auto-tag-dev-v5.5.yml
+!/.github/workflows/auto-tag-releases-v5.5.yml
 !/.backportrc.json
 !/.github/workflows/backport.yml
 !/.projenrc.ts
diff --git a/.projen/deps.json b/.projen/deps.json
index d0d7b3cb..e4c7c131 100644
--- a/.projen/deps.json
+++ b/.projen/deps.json
@@ -148,7 +148,7 @@
     },
     {
       "name": "jsii",
-      "version": "~5.5.0",
+      "version": "~5.6.0",
       "type": "runtime"
     },
     {
@@ -165,7 +165,7 @@
     },
     {
       "name": "typescript",
-      "version": "~5.5",
+      "version": "~5.6",
       "type": "runtime"
     },
     {
diff --git a/.projen/files.json b/.projen/files.json
index 173c315f..607599e2 100644
--- a/.projen/files.json
+++ b/.projen/files.json
@@ -7,8 +7,10 @@
     ".github/workflows/auto-approve.yml",
     ".github/workflows/auto-merge.yml",
     ".github/workflows/auto-tag-dev-v5.4.yml",
+    ".github/workflows/auto-tag-dev-v5.5.yml",
     ".github/workflows/auto-tag-dev.yml",
     ".github/workflows/auto-tag-releases-v5.4.yml",
+    ".github/workflows/auto-tag-releases-v5.5.yml",
     ".github/workflows/auto-tag-releases.yml",
     ".github/workflows/backport.yml",
     ".github/workflows/build.yml",
@@ -16,8 +18,10 @@
     ".github/workflows/release.yml",
     ".github/workflows/upgrade-jsii-main.yml",
     ".github/workflows/upgrade-jsii-maintenance-v5.4.yml",
+    ".github/workflows/upgrade-jsii-maintenance-v5.5.yml",
     ".github/workflows/upgrade-main.yml",
     ".github/workflows/upgrade-maintenance-v5.4.yml",
+    ".github/workflows/upgrade-maintenance-v5.5.yml",
     ".gitignore",
     ".npmignore",
     ".prettierrc.json",
diff --git a/.projenrc.ts b/.projenrc.ts
index 30c481de..97cb8f03 100644
--- a/.projenrc.ts
+++ b/.projenrc.ts
@@ -13,21 +13,22 @@ import { JsiiDependencyUpgrades } from './projenrc/upgrade-dependencies';
  *     `git switch main && git fetch --all && git pull`
  *     `git push origin main:maintenance/vX.Y` (X.Y is the TS version that is about to be replaced by a new release)
  *  3. Add a branch protection rule for the new maintenance branch
- *     Copy the settings from the branch for the version that is about to be replaced.
+ *     Copy the settings from the most recent maintenance branch.
  *  4. Edit `support.ts`, maintenance EOL date for the current version is 6 months from
  *     today (round up to the mid-point or end of month), make the new version current.
  *     Also update `currentMinVersionNumber`.
  *  5. Update `minNodeVersion` to the oldest LTS version of Node (i.e. dropping support for EOL versions of Node)
- *  6. `npx projen`
- *  7. Update the version list in the README (remember to remove EOS versions)
- *  8. Create a PR, with title "feat: TypeScript X.Y"
- *  9. Note that merging the PR doesn't trigger a release. Releases are performed on a weekly schedule.
+ *  6. Update the version list in the README (remember to remove EOS versions)
+ *  7. `npx projen`
+ *  8. `npx build` and fix any issues that come up
+ *  9. Create a PR, with title "feat: TypeScript X.Y"
+ * 10. Note that merging the PR doesn't trigger a release. Releases are performed on a weekly schedule.
  *     You should manually create a release by triggering this workflow:
  *     https://github.com/aws/jsii-rosetta/actions/workflows/auto-tag-releases.yml
- * 10. Add support for the new rosetta version line to `jsii-pacmak`.
+ * 11. Add support for the new rosetta version line to `jsii-pacmak`.
  *     See https://github.com/aws/jsii/blob/main/CONTRIBUTING.md#support-for-new-jsii-rosetta-versions
- * 11. Add support for the new rosetta version line in `jsii-docgen` (have a look at RosettaPeerDependency in projenrc.ts).
- * 12. Once jsii-docgen is released, add support for the new jsii version line to projen.
+ * 12. Add support for the new rosetta version line in `jsii-docgen` (have a look at RosettaPeerDependency in projenrc.ts).
+ * 13. Once jsii-docgen is released, add support for the new jsii version line to projen.
  *     Example: https://github.com/projen/projen/pull/3805
  */
 
diff --git a/README.md b/README.md
index 44cb2a29..e968b889 100644
--- a/README.md
+++ b/README.md
@@ -40,11 +40,10 @@ The applicable *Maintenance & Support policy* can be reviewed in [SUPPORT.md](./
 The current status of `jsii-rosetta` releases is:
 
 | Release | Status      | EOS        | Comment                                                                                                 |
-| ------- | ----------- | -----------| ------------------------------------------------------------------------------------------------------- |
-| `5.5.x` | Current     | TBD        | ![npm](https://img.shields.io/npm/v/jsii-rosetta/v5.5-latest?label=jsii-rosetta%40v5.5-latest&logo=npm) |
+| ------- | ----------- | ---------- | ------------------------------------------------------------------------------------------------------- |
+| `5.6.x` | Current     | TBD        | ![npm](https://img.shields.io/npm/v/jsii-rosetta/v5.6-latest?label=jsii-rosetta%40v5.6-latest&logo=npm) |
+| `5.5.x` | Maintenance | 2025-05-15 | ![npm](https://img.shields.io/npm/v/jsii-rosetta/v5.5-latest?label=jsii-rosetta%40v5.5-latest&logo=npm) |
 | `5.4.x` | Maintenance | 2025-02-28 | ![npm](https://img.shields.io/npm/v/jsii-rosetta/v5.4-latest?label=jsii-rosetta%40v5.4-latest&logo=npm) |
-| `5.3.x` | Maintenance | 2024-10-07 | ![npm](https://img.shields.io/npm/v/jsii-rosetta/v5.3-latest?label=jsii-rosetta%40v5.3-latest&logo=npm) |
-| `1.x`   | Maintenance | 2024-10-31 | ![npm](https://img.shields.io/npm/v/jsii-rosetta/v1?label=jsii-rosetta%40v1&logo=npm)                   |
 
 ## :gear: Contributing
 
diff --git a/package.json b/package.json
index f9f7ebfd..143880f8 100644
--- a/package.json
+++ b/package.json
@@ -71,11 +71,11 @@
     "chalk": "^4",
     "commonmark": "^0.31.2",
     "fast-glob": "^3.3.2",
-    "jsii": "~5.5.0",
+    "jsii": "~5.6.0",
     "semver": "^7.6.3",
     "semver-intersect": "^1.5.0",
     "stream-json": "^1.9.1",
-    "typescript": "~5.5",
+    "typescript": "~5.6",
     "workerpool": "^6.5.1",
     "yargs": "^17.7.2"
   },
diff --git a/projenrc/support.ts b/projenrc/support.ts
index b8995d3d..8668a849 100644
--- a/projenrc/support.ts
+++ b/projenrc/support.ts
@@ -10,9 +10,9 @@ interface ReleasesDocument {
 }
 
 export const SUPPORT_POLICY: ReleasesDocument = {
-  current: '5.5',
+  current: '5.6',
   // Define a different patch version here if a specific feature or bug-fix
-  currentMinVersionNumber: '5.5.0',
+  currentMinVersionNumber: '5.6.0',
   maintenance: {
     // version: End-of-support date
     '5.0': new Date('2024-01-31'),
@@ -20,6 +20,7 @@ export const SUPPORT_POLICY: ReleasesDocument = {
     '5.2': new Date('2024-06-30'),
     '5.3': new Date('2024-10-15'),
     '5.4': new Date('2025-02-28'),
+    '5.5': new Date('2025-05-15'),
   },
 };
 
diff --git a/releases.json b/releases.json
index 19375044..b987261a 100644
--- a/releases.json
+++ b/releases.json
@@ -1,12 +1,13 @@
 {
-  "current": "5.5",
-  "currentMinVersionNumber": "5.5.0",
+  "current": "5.6",
+  "currentMinVersionNumber": "5.6.0",
   "maintenance": {
     "5.0": "2024-01-31T00:00:00.000Z",
     "5.1": "2024-04-30T00:00:00.000Z",
     "5.2": "2024-06-30T00:00:00.000Z",
     "5.3": "2024-10-15T00:00:00.000Z",
-    "5.4": "2025-02-28T00:00:00.000Z"
+    "5.4": "2025-02-28T00:00:00.000Z",
+    "5.5": "2025-05-15T00:00:00.000Z"
   },
   "//": "~~ Generated by projen. To modify, edit .projenrc.ts and run \"npx projen\"."
 }
diff --git a/test/translate.test.ts b/test/translate.test.ts
index 80db45f3..9c4efc68 100644
--- a/test/translate.test.ts
+++ b/test/translate.test.ts
@@ -47,9 +47,9 @@ test('does not fail on "Debug Failure"', () => {
 
 test('rejects ?? operator', () => {
   const snippet: TypeScriptSnippet = {
-    completeSource: 'const x = false ?? true;',
+    completeSource: 'const x = false; const y = x ?? true;',
     location,
-    visibleSource: 'const x = false ?? true;',
+    visibleSource: 'const x = false; const y = x ?? true;',
     parameters: { lit: 'test/integ.restapi-import.lit.ts' },
     strict: false,
   };
diff --git a/yarn.lock b/yarn.lock
index c667958c..2149895a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1794,15 +1794,6 @@ doctrine@^2.1.0:
   dependencies:
     esutils "^2.0.2"
 
-downlevel-dts@^0.11.0:
-  version "0.11.0"
-  resolved "https://registry.yarnpkg.com/downlevel-dts/-/downlevel-dts-0.11.0.tgz#514a2d723009c5845730c1db6c994484c596ed9c"
-  integrity sha512-vo835pntK7kzYStk7xUHDifiYJvXxVhUapt85uk2AI94gUUAQX9HNRtrcMHNSc3YHJUEHGbYIGsM99uIbgAtxw==
-  dependencies:
-    semver "^7.3.2"
-    shelljs "^0.8.3"
-    typescript next
-
 ejs@^3.1.10:
   version "3.1.10"
   resolved "https://registry.yarnpkg.com/ejs/-/ejs-3.1.10.tgz#69ab8358b14e896f80cc39e62087b88500c3ac3b"
@@ -3257,23 +3248,22 @@ jsesc@~0.5.0:
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
   integrity sha512-uZz5UnB7u4T9LvwmFqXii7pZSouaRPorGs5who1Ip7VO0wxanFvBL7GkM6dTHlgX+jhBApRetaWpnDabOeTcnA==
 
-jsii@~5.5.0:
-  version "5.5.9"
-  resolved "https://registry.yarnpkg.com/jsii/-/jsii-5.5.9.tgz#9dbf6ce4038db37e699d687285fac2e190d2caab"
-  integrity sha512-UBvHIyvvpzYxaPwKDZbJAE53YJ2i5f4W6oolNSZ9vuIOM9lMTDYl5+TGHZv6yt9Ct0kFG0XNq2JbFzgE9l0oJA==
+jsii@~5.6.0:
+  version "5.6.0"
+  resolved "https://registry.yarnpkg.com/jsii/-/jsii-5.6.0.tgz#f41b5f57f9637bebd3e274c672b270f5332a9074"
+  integrity sha512-XBXAF9a4UF2HE+LMSa+WDuYRNpmZlBxHrXaTVIFumo0oAuKb9eauPd4slwgQnCftyP5iyk8zX/Z2y4I3yQVcfA==
   dependencies:
     "@jsii/check-node" "1.104.0"
     "@jsii/spec" "^1.104.0"
     case "^1.6.3"
     chalk "^4"
-    downlevel-dts "^0.11.0"
     fast-deep-equal "^3.1.3"
     log4js "^6.9.1"
     semver "^7.6.3"
     semver-intersect "^1.5.0"
     sort-json "^2.0.1"
     spdx-license-list "^6.9.0"
-    typescript "~5.5"
+    typescript "~5.6"
     yargs "^17.7.2"
 
 json-buffer@3.0.1:
@@ -4035,7 +4025,7 @@ semver@^6.3.0, semver@^6.3.1:
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.1.tgz#556d2ef8689146e46dcea4bfdd095f3434dffcb4"
   integrity sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==
 
-semver@^7.3.2, semver@^7.5.3, semver@^7.5.4, semver@^7.6.0, semver@^7.6.3:
+semver@^7.5.3, semver@^7.5.4, semver@^7.6.0, semver@^7.6.3:
   version "7.6.3"
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.6.3.tgz#980f7b5550bc175fb4dc09403085627f9eb33143"
   integrity sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==
@@ -4079,7 +4069,7 @@ shebang-regex@^3.0.0:
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz#ae16f1644d873ecad843b0307b143362d4c42172"
   integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
 
-shelljs@^0.8.3, shelljs@^0.8.5:
+shelljs@^0.8.5:
   version "0.8.5"
   resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.5.tgz#de055408d8361bed66c669d2f000538ced8ee20c"
   integrity sha512-TiwcRcrkhHvbrZbnRcFYMLl30Dfov3HKqzp5tO5b4pt6G/SezKcYhmDg15zXVBswHmctSAQKznqNW2LO5tTDow==
@@ -4510,15 +4500,10 @@ typed-array-length@^1.0.6:
     is-typed-array "^1.1.13"
     possible-typed-array-names "^1.0.0"
 
-typescript@next:
-  version "5.8.0-dev.20241112"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.8.0-dev.20241112.tgz#7852a824ebb53175239648f244a77fcffaaf469d"
-  integrity sha512-h5Ik9z9sIGe898ya+9bG+XBZQHzSYFY0Q1X9QmsDjcX2xf3jwNnWaUAE0NLVw0Lx+XBRBB2qf7GyfeqDNrzofQ==
-
-typescript@~5.5:
-  version "5.5.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.5.4.tgz#d9852d6c82bad2d2eda4fd74a5762a8f5909e9ba"
-  integrity sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==
+typescript@~5.6:
+  version "5.6.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.6.3.tgz#5f3449e31c9d94febb17de03cc081dd56d81db5b"
+  integrity sha512-hjcS1mhfuyi4WW8IWtjP7brDrG2cuDZukyrYrSauoXGNgx0S7zceP07adYkJycEr56BOUTNPzbInooiN3fn1qw==
 
 unbox-primitive@^1.0.2:
   version "1.0.2"