diff --git a/src/utils.ts b/src/utils.ts
index 7ca612d49..ad0c46dcc 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -255,11 +255,10 @@ export function writeFileSync(filePath: string, content: string) {
  */
 export function replaceDtsWithJsExtensions(dtsFilePath: string) {
   return dtsFilePath.replace(
-    /\.d\.(ts|mts|cts|tsx)$/,
+    /\.d\.(ts|mts|cts)$/,
     (_, fileExtension: string) => {
       switch (fileExtension) {
         case 'ts':
-        case 'tsx':
           return '.js'
         case 'mts':
           return '.mjs'