diff --git a/.github/workflows/differential-shellcheck.yml b/.github/workflows/differential-shellcheck.yml
deleted file mode 100644
index 64e85eb..0000000
--- a/.github/workflows/differential-shellcheck.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-name: Differential ShellCheck
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-permissions:
-  contents: read
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-
-    permissions:
-      security-events: write
-
-    steps:
-      - name: Repository checkout
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - id: ShellCheck
-        name: Differential ShellCheck
-        uses: redhat-plumbers-in-action/differential-shellcheck@v5
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-
-      - if: always()
-        name: Upload artifact with ShellCheck defects in SARIF format
-        uses: actions/upload-artifact@v4
-        with:
-          name: Differential ShellCheck SARIF
-          path: ${{ steps.ShellCheck.outputs.sarif }}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..3030436
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,53 @@
+name: Publish package
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: yarn
+          cache-dependency-path: yarn.lock
+
+      - name: Install
+        run: yarn install
+
+      - name: Compile
+        run: yarn build
+
+      - name: Test
+        run: yarn test
+
+  publish-npm:
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          registry-url: https://registry.npmjs.org/
+
+      - name: Install
+        run: yarn install
+
+      - name: Compile
+        run: yarn build
+
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/src/types.ts b/src/types.ts
index a94ba2c..ee98be9 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -408,8 +408,8 @@ export interface Attachment {
   summary: string;
   content_type: string;
   is_private: boolean | int;
-  is_obsolete: boolean;
-  is_patch: boolean;
+  is_obsolete: boolean | int;
+  is_patch: boolean | int;
   creator: string;
   flags: Flag[];
 }
@@ -425,8 +425,8 @@ export const AttachmentSpec: ObjectSpec<Attachment> = {
   summary: string,
   content_type: string,
   is_private: either(boolean, int),
-  is_obsolete: boolean,
-  is_patch: boolean,
+  is_obsolete: either(boolean, int),
+  is_patch: either(boolean, int),
   creator: string,
   flags: array(object(FlagSpec)),
 };
@@ -470,7 +470,7 @@ export interface UpdateAttachmentContent {
   content_type?: string;
   is_patch?: boolean;
   is_private?: boolean;
-  is_obsolete?: boolean;
+  is_obsolete?: boolean | int;
   flags?: UpdateFlag[];
 }