diff --git a/packages/angular-query-devtools-experimental/tsup.config.js b/packages/angular-query-devtools-experimental/tsup.config.ts
similarity index 100%
rename from packages/angular-query-devtools-experimental/tsup.config.js
rename to packages/angular-query-devtools-experimental/tsup.config.ts
diff --git a/packages/angular-query-persist-client/tsup.config.js b/packages/angular-query-persist-client/tsup.config.ts
similarity index 100%
rename from packages/angular-query-persist-client/tsup.config.js
rename to packages/angular-query-persist-client/tsup.config.ts
diff --git a/packages/eslint-plugin-query/tsup.config.js b/packages/eslint-plugin-query/tsup.config.ts
similarity index 93%
rename from packages/eslint-plugin-query/tsup.config.js
rename to packages/eslint-plugin-query/tsup.config.ts
index fb3116bddb..de1af4ee08 100644
--- a/packages/eslint-plugin-query/tsup.config.js
+++ b/packages/eslint-plugin-query/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/query-async-storage-persister/tsup.config.js b/packages/query-async-storage-persister/tsup.config.ts
similarity index 93%
rename from packages/query-async-storage-persister/tsup.config.js
rename to packages/query-async-storage-persister/tsup.config.ts
index fb3116bddb..de1af4ee08 100644
--- a/packages/query-async-storage-persister/tsup.config.js
+++ b/packages/query-async-storage-persister/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/query-broadcast-client-experimental/tsup.config.js b/packages/query-broadcast-client-experimental/tsup.config.ts
similarity index 93%
rename from packages/query-broadcast-client-experimental/tsup.config.js
rename to packages/query-broadcast-client-experimental/tsup.config.ts
index fb3116bddb..de1af4ee08 100644
--- a/packages/query-broadcast-client-experimental/tsup.config.js
+++ b/packages/query-broadcast-client-experimental/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/query-core/tsconfig.json b/packages/query-core/tsconfig.json
index bfbc7cdf91..82f2da1e84 100644
--- a/packages/query-core/tsconfig.json
+++ b/packages/query-core/tsconfig.json
@@ -4,5 +4,5 @@
     "outDir": "./dist-ts",
     "rootDir": "."
   },
-  "include": ["src", "*.config.js", "package.json"]
+  "include": ["src", "*.config.js", "*.config.ts", "package.json"]
 }
diff --git a/packages/query-core/tsup.config.js b/packages/query-core/tsup.config.ts
similarity index 93%
rename from packages/query-core/tsup.config.js
rename to packages/query-core/tsup.config.ts
index fb3116bddb..de1af4ee08 100644
--- a/packages/query-core/tsup.config.js
+++ b/packages/query-core/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/query-devtools/tsup.config.js b/packages/query-devtools/tsup.config.ts
similarity index 97%
rename from packages/query-devtools/tsup.config.js
rename to packages/query-devtools/tsup.config.ts
index fac53914a6..854110ec19 100644
--- a/packages/query-devtools/tsup.config.js
+++ b/packages/query-devtools/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { generateTsupOptions, parsePresetOptions } from 'tsup-preset-solid'
 
diff --git a/packages/query-persist-client-core/tsup.config.js b/packages/query-persist-client-core/tsup.config.js
deleted file mode 100644
index fb3116bddb..0000000000
--- a/packages/query-persist-client-core/tsup.config.js
+++ /dev/null
@@ -1,9 +0,0 @@
-// @ts-check
-
-import { defineConfig } from 'tsup'
-import { legacyConfig, modernConfig } from './root.tsup.config.js'
-
-export default defineConfig([
-  modernConfig({ entry: ['src/*.ts'] }),
-  legacyConfig({ entry: ['src/*.ts'] }),
-])
diff --git a/packages/query-persist-client-core/tsup.config.ts b/packages/query-persist-client-core/tsup.config.ts
new file mode 100644
index 0000000000..de1af4ee08
--- /dev/null
+++ b/packages/query-persist-client-core/tsup.config.ts
@@ -0,0 +1,7 @@
+import { defineConfig } from 'tsup'
+import { legacyConfig, modernConfig } from './root.tsup.config.js'
+
+export default defineConfig([
+  modernConfig({ entry: ['src/*.ts'] }),
+  legacyConfig({ entry: ['src/*.ts'] }),
+])
diff --git a/packages/query-sync-storage-persister/tsup.config.js b/packages/query-sync-storage-persister/tsup.config.js
deleted file mode 100644
index fb3116bddb..0000000000
--- a/packages/query-sync-storage-persister/tsup.config.js
+++ /dev/null
@@ -1,9 +0,0 @@
-// @ts-check
-
-import { defineConfig } from 'tsup'
-import { legacyConfig, modernConfig } from './root.tsup.config.js'
-
-export default defineConfig([
-  modernConfig({ entry: ['src/*.ts'] }),
-  legacyConfig({ entry: ['src/*.ts'] }),
-])
diff --git a/packages/query-sync-storage-persister/tsup.config.ts b/packages/query-sync-storage-persister/tsup.config.ts
new file mode 100644
index 0000000000..de1af4ee08
--- /dev/null
+++ b/packages/query-sync-storage-persister/tsup.config.ts
@@ -0,0 +1,7 @@
+import { defineConfig } from 'tsup'
+import { legacyConfig, modernConfig } from './root.tsup.config.js'
+
+export default defineConfig([
+  modernConfig({ entry: ['src/*.ts'] }),
+  legacyConfig({ entry: ['src/*.ts'] }),
+])
diff --git a/packages/react-query-devtools/tsup.config.js b/packages/react-query-devtools/tsup.config.ts
similarity index 94%
rename from packages/react-query-devtools/tsup.config.js
rename to packages/react-query-devtools/tsup.config.ts
index ed67956b59..ef4a978d12 100644
--- a/packages/react-query-devtools/tsup.config.js
+++ b/packages/react-query-devtools/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/react-query-next-experimental/tsup.config.js b/packages/react-query-next-experimental/tsup.config.ts
similarity index 94%
rename from packages/react-query-next-experimental/tsup.config.js
rename to packages/react-query-next-experimental/tsup.config.ts
index ed67956b59..ef4a978d12 100644
--- a/packages/react-query-next-experimental/tsup.config.js
+++ b/packages/react-query-next-experimental/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/react-query-persist-client/tsup.config.js b/packages/react-query-persist-client/tsup.config.ts
similarity index 94%
rename from packages/react-query-persist-client/tsup.config.js
rename to packages/react-query-persist-client/tsup.config.ts
index ed67956b59..ef4a978d12 100644
--- a/packages/react-query-persist-client/tsup.config.js
+++ b/packages/react-query-persist-client/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/react-query/tsup.config.js b/packages/react-query/tsup.config.ts
similarity index 94%
rename from packages/react-query/tsup.config.js
rename to packages/react-query/tsup.config.ts
index ed67956b59..ef4a978d12 100644
--- a/packages/react-query/tsup.config.js
+++ b/packages/react-query/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'
 
diff --git a/packages/solid-query-devtools/tsup.config.js b/packages/solid-query-devtools/tsup.config.ts
similarity index 97%
rename from packages/solid-query-devtools/tsup.config.js
rename to packages/solid-query-devtools/tsup.config.ts
index 1ddd3f74f0..09316c5110 100644
--- a/packages/solid-query-devtools/tsup.config.js
+++ b/packages/solid-query-devtools/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { generateTsupOptions, parsePresetOptions } from 'tsup-preset-solid'
 
diff --git a/packages/solid-query-persist-client/tsup.config.js b/packages/solid-query-persist-client/tsup.config.ts
similarity index 97%
rename from packages/solid-query-persist-client/tsup.config.js
rename to packages/solid-query-persist-client/tsup.config.ts
index fac53914a6..854110ec19 100644
--- a/packages/solid-query-persist-client/tsup.config.js
+++ b/packages/solid-query-persist-client/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { generateTsupOptions, parsePresetOptions } from 'tsup-preset-solid'
 
diff --git a/packages/solid-query/tsup.config.js b/packages/solid-query/tsup.config.ts
similarity index 97%
rename from packages/solid-query/tsup.config.js
rename to packages/solid-query/tsup.config.ts
index fac53914a6..854110ec19 100644
--- a/packages/solid-query/tsup.config.js
+++ b/packages/solid-query/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { generateTsupOptions, parsePresetOptions } from 'tsup-preset-solid'
 
diff --git a/packages/vue-query/tsup.config.js b/packages/vue-query/tsup.config.ts
similarity index 94%
rename from packages/vue-query/tsup.config.js
rename to packages/vue-query/tsup.config.ts
index 4b68341f61..6b77215076 100644
--- a/packages/vue-query/tsup.config.js
+++ b/packages/vue-query/tsup.config.ts
@@ -1,5 +1,3 @@
-// @ts-check
-
 import { defineConfig } from 'tsup'
 import { legacyConfig, modernConfig } from './root.tsup.config.js'