diff --git a/examples/isolated-declarations-oxc/package.json b/examples/isolated-declarations-oxc/package.json
index 35c2882b..e1bb9331 100644
--- a/examples/isolated-declarations-oxc/package.json
+++ b/examples/isolated-declarations-oxc/package.json
@@ -19,9 +19,9 @@
     "module": "./dist/index.mjs",
     "types": "./dist/index.d.ts",
     "typesVersions": {
-        "*": {
+        ">=5.5": {
             ".": [
-                "./dist/index.d.ts"
+                "./dist/index.d.cts"
             ]
         }
     },
diff --git a/examples/isolated-declarations-oxc/packem.config.ts b/examples/isolated-declarations-oxc/packem.config.ts
index 7ca5cb15..64fd7851 100644
--- a/examples/isolated-declarations-oxc/packem.config.ts
+++ b/examples/isolated-declarations-oxc/packem.config.ts
@@ -9,6 +9,7 @@ export default defineConfig({
     isolatedDeclarationTransformer,
     rollup: {
         node10Compatibility: {
+            typeScriptVersion: ">=5.5",
             writeToPackageJson: true,
         },
     },
diff --git a/examples/isolated-declarations-swc/package.json b/examples/isolated-declarations-swc/package.json
index 45f2fb1f..5a1445c5 100644
--- a/examples/isolated-declarations-swc/package.json
+++ b/examples/isolated-declarations-swc/package.json
@@ -19,9 +19,9 @@
     "module": "./dist/index.mjs",
     "types": "./dist/index.d.ts",
     "typesVersions": {
-        "*": {
+        ">=5.5": {
             ".": [
-                "./dist/index.d.ts"
+                "./dist/index.d.cts"
             ]
         }
     },
diff --git a/examples/isolated-declarations-swc/packem.config.ts b/examples/isolated-declarations-swc/packem.config.ts
index 2614ca3b..ebf4db0d 100644
--- a/examples/isolated-declarations-swc/packem.config.ts
+++ b/examples/isolated-declarations-swc/packem.config.ts
@@ -9,6 +9,7 @@ export default defineConfig({
     isolatedDeclarationTransformer,
     rollup: {
         node10Compatibility: {
+            typeScriptVersion: ">=5.5",
             writeToPackageJson: true,
         },
     },
diff --git a/examples/isolated-declarations-typescript/package.json b/examples/isolated-declarations-typescript/package.json
index 5da0c648..9ba30a84 100644
--- a/examples/isolated-declarations-typescript/package.json
+++ b/examples/isolated-declarations-typescript/package.json
@@ -19,15 +19,10 @@
     "module": "./dist/index.mjs",
     "types": "./dist/index.d.ts",
     "typesVersions": {
-        ">=5.0": {
+        ">=5.5": {
             ".": [
                 "./dist/index.d.cts"
             ]
-        },
-        "*": {
-            ".": [
-                "./dist/index.d.ts"
-            ]
         }
     },
     "files": [
diff --git a/examples/isolated-declarations-typescript/packem.config.ts b/examples/isolated-declarations-typescript/packem.config.ts
index c27d7445..859562d3 100644
--- a/examples/isolated-declarations-typescript/packem.config.ts
+++ b/examples/isolated-declarations-typescript/packem.config.ts
@@ -9,6 +9,7 @@ export default defineConfig({
     isolatedDeclarationTransformer,
     rollup: {
         node10Compatibility: {
+            typeScriptVersion: ">=5.5",
             writeToPackageJson: true,
         },
     },
diff --git a/packages/packem/package.json b/packages/packem/package.json
index 092c7b98..20dcbdfa 100644
--- a/packages/packem/package.json
+++ b/packages/packem/package.json
@@ -311,6 +311,62 @@
             "css/minifier/lightningcss": [
                 "./dist/rollup/plugins/css/minifiers/lightningcss.d.ts"
             ]
+        },
+        ">=5.5": {
+            ".": [
+                "./dist/packem.d.ts"
+            ],
+            "config": [
+                "./dist/config.d.ts"
+            ],
+            "transformer/esbuild": [
+                "./dist/rollup/plugins/esbuild/index.d.ts"
+            ],
+            "transformer/swc": [
+                "./dist/rollup/plugins/swc/swc-plugin.d.ts"
+            ],
+            "dts/isolated/transformer/swc": [
+                "./dist/rollup/plugins/swc/isolated-declarations-swc-transformer.d.ts"
+            ],
+            "dts/isolated/transformer/oxc": [
+                "./dist/rollup/plugins/oxc/isolated-declarations-oxc-transformer.d.ts"
+            ],
+            "dts/isolated/transformer/typescript": [
+                "./dist/rollup/plugins/typescript/isolated-declarations-typescript-transformer.d.ts"
+            ],
+            "transformer/sucrase": [
+                "./dist/rollup/plugins/sucrase/index.d.ts"
+            ],
+            "builder/typedoc": [
+                "./dist/builder/typedoc/index.d.ts"
+            ],
+            "runtime/inject-css": [
+                "./dist/rollup/plugins/css/runtime/inject-css.d.ts"
+            ],
+            "css/loader/sourcemap": [
+                "./dist/rollup/plugins/css/loaders/sourcemap.d.ts"
+            ],
+            "css/loader/less": [
+                "./dist/rollup/plugins/css/loaders/less/index.d.ts"
+            ],
+            "css/loader/postcss": [
+                "./dist/rollup/plugins/css/loaders/postcss/index.d.ts"
+            ],
+            "css/loader/sass": [
+                "./dist/rollup/plugins/css/loaders/sass/index.d.ts"
+            ],
+            "css/loader/stylus": [
+                "./dist/rollup/plugins/css/loaders/stylus/index.d.ts"
+            ],
+            "css/loader/lightningcss": [
+                "./dist/rollup/plugins/css/loaders/lightningcss.d.ts"
+            ],
+            "css/minifier/cssnano": [
+                "./dist/rollup/plugins/css/minifiers/cssnano.d.ts"
+            ],
+            "css/minifier/lightningcss": [
+                "./dist/rollup/plugins/css/minifiers/lightningcss.d.ts"
+            ]
         }
     },
     "bin": {
diff --git a/packages/packem/packem.config.ts b/packages/packem/packem.config.ts
index 510dde01..7e62a4a4 100644
--- a/packages/packem/packem.config.ts
+++ b/packages/packem/packem.config.ts
@@ -13,7 +13,7 @@ export default defineConfig({
             path: "./LICENSE.md",
         },
         node10Compatibility: {
-            typeScriptVersion: ">=5.0",
+            typeScriptVersion: ">=5.5",
             writeToPackageJson: true,
         },
     },
diff --git a/packages/packem/src/commands/add.ts b/packages/packem/src/commands/add.ts
index c7ca1d15..e51f2ca4 100644
--- a/packages/packem/src/commands/add.ts
+++ b/packages/packem/src/commands/add.ts
@@ -84,6 +84,7 @@ const createAddCommand = (cli: Cli): void => {
                     return;
                 }
 
+                // eslint-disable-next-line @typescript-eslint/no-redundant-type-constituents
                 const cssLoaders: (keyof typeof cssLoaderDependencies | "sourceMap")[] = [];
 
                 const mainCssLoader = (await select({
@@ -128,7 +129,7 @@ const createAddCommand = (cli: Cli): void => {
                 const packagesToInstall: string[] = [];
 
                 for (const loader of cssLoaders) {
-                    packagesToInstall.push(...cssLoaderDependencies[loader as keyof typeof cssLoaderDependencies]);
+                    packagesToInstall.push(...cssLoaderDependencies[loader as keyof typeof cssLoaderDependencies] as string[]);
                 }
 
                 cssLoaders.push("sourceMap");
diff --git a/packages/packem/src/rollup/get-rollup-options.ts b/packages/packem/src/rollup/get-rollup-options.ts
index a6271c71..dd3e7fc9 100644
--- a/packages/packem/src/rollup/get-rollup-options.ts
+++ b/packages/packem/src/rollup/get-rollup-options.ts
@@ -783,8 +783,6 @@ export const getRollupDtsOptions = async (context: BuildContext, fileCache: File
 
             nodeResolver,
 
-            context.options.sourcemap && sourcemapsPlugin(context.options.rollup.sourcemap),
-
             ...normalPlugins,
 
             await memoizeDtsPluginByKey(uniqueProcessId)(context),