diff --git a/.github/workflows/publish-datatype-parser.yml b/.github/workflows/publish-datatype-parser.yml
index 4dc7fdead..cf3a39d85 100644
--- a/.github/workflows/publish-datatype-parser.yml
+++ b/.github/workflows/publish-datatype-parser.yml
@@ -55,6 +55,13 @@ jobs:
           registry-url: "https://registry.npmjs.org"
 
       - name: Install dependencies
+        # datatype-parser is an npm workspace package, so install the whole
+        # workspace from the repo root (overriding this job's package-dir
+        # default). A scoped `npm ci` from the package dir still fires the root
+        # lifecycle scripts (postinstall/parquet-wasm, prepare/husky) but
+        # without their dev-only devDependencies, which breaks the install. The
+        # remaining steps run from packages/datatype-parser as usual.
+        working-directory: ${{ github.workspace }}
         run: npm ci
 
       - name: Build
diff --git a/package.json b/package.json
index ae605aa9f..0001af256 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "test:web:all": "TEST_MODE=all vitest -c vitest.web.config.ts",
     "test:web:coverage": "VITEST_COVERAGE=true TEST_MODE=all vitest -c vitest.web.config.ts",
     "//": "See https://github.com/kylebarron/parquet-wasm/issues/798",
-    "postinstall": "cd node_modules/parquet-wasm 2>/dev/null && npm pkg delete type || true",
+    "postinstall": "cd node_modules/parquet-wasm && npm pkg delete type",
     "prepare": "husky"
   },
   "devDependencies": {