diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7b00276..5395d92 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ on:
 
 jobs:
   test:
-    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v3
+    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v4.1.0
     with:
       license-check: true
       lint: true
diff --git a/.github/workflows/package-manager-ci.yml b/.github/workflows/package-manager-ci.yml
deleted file mode 100644
index 89d450f..0000000
--- a/.github/workflows/package-manager-ci.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: package-manager-ci
-
-on:
-  push:
-    branches:
-     - main
-     - master
-     - next
-     - 'v*'
-    paths-ignore:
-      - 'docs/**'
-      - '*.md'
-  pull_request:
-    paths-ignore:
-      - 'docs/**'
-      - '*.md'
-
-jobs:
-  test:
-    uses: fastify/workflows/.github/workflows/plugins-ci-package-manager.yml@v3
diff --git a/.taprc b/.taprc
index fccba25..b30f091 100644
--- a/.taprc
+++ b/.taprc
@@ -1,6 +1,5 @@
-ts: false
-jsx: false
-coverage: true
-
+disable-coverage: true
 files:
   - test/**/*.test.js
+plugin:
+  - "!@tapjs/typescript"
diff --git a/package.json b/package.json
index 6e87fb5..e80bdae 100644
--- a/package.json
+++ b/package.json
@@ -23,10 +23,10 @@
   },
   "homepage": "https://github.com/fastify/deepmerge#readme",
   "devDependencies": {
-    "standard": "^17.0.0",
-    "tap": "^16.3.0",
-    "tape": "^5.6.1",
-    "tsd": "^0.27.0"
+    "standard": "^17.1.0",
+    "tap": "^18.7.1",
+    "tape": "^5.7.5",
+    "tsd": "^0.30.7"
   },
   "files": [
     "LICENSE",
diff --git a/types/index.test-d.ts b/types/index.test-d.ts
index 0fda4b7..78df804 100644
--- a/types/index.test-d.ts
+++ b/types/index.test-d.ts
@@ -16,8 +16,8 @@ expectAssignable<Function>(deepmerge({ symbols: true }))
 expectType<string>(deepmerge()('string', { a: 'string' }).a)
 expectType<string>(deepmerge()(1, { a: 'string' }).a)
 
-expectType<string>(deepmerge()({ a: 'string' }, 'string'))
-expectType<number>(deepmerge()({ a: 'string' }, 1))
+expectType<string>(deepmerge()<Object, string>({ a: 'string' }, 'string'))
+expectType<number>(deepmerge()<Object, number>({ a: 'string' }, 1))
 expectType<Date>(deepmerge()({ a: 'string' }, new Date()))
 expectType<RegExp>(deepmerge()({ a: 'string' }, /a/g))
 expectType<{}>(deepmerge()(/a/, {}))