diff --git a/packages/definitions-parser/src/lib/definition-parser.ts b/packages/definitions-parser/src/lib/definition-parser.ts
index 1ffd0766ae..fe7aae19c8 100644
--- a/packages/definitions-parser/src/lib/definition-parser.ts
+++ b/packages/definitions-parser/src/lib/definition-parser.ts
@@ -266,8 +266,8 @@ export function getFiles(
   const rootDir = dt.subDir("types").subDir(typingsData.subDirectoryPath);
 
   const files: string[] = [];
-  function addFileIfDeclaration(path: string): void {
-    if (isDeclarationPath(path)) {
+  function addFileIfIncluded(path: string): void {
+    if (isDeclarationPath(path) || path.endsWith('/package.json')) {
       files.push(path);
     }
   }
@@ -276,7 +276,7 @@ export function getFiles(
     const path = rootName ? `${rootName}/${name}` : name;
 
     if (!root.isDirectory(name)) {
-      addFileIfDeclaration(path);
+      addFileIfIncluded(path);
       return;
     }
 
diff --git a/packages/definitions-parser/test/packages.test.ts b/packages/definitions-parser/test/packages.test.ts
index 54b8ddb3e8..5c1b02db55 100644
--- a/packages/definitions-parser/test/packages.test.ts
+++ b/packages/definitions-parser/test/packages.test.ts
@@ -180,6 +180,42 @@ describe(TypingsData, () => {
     expect(data.isNotNeeded()).toBe(false);
   });
 
+  it("includes nested package.json files in getFiles()", () => {
+    const dt = createMockDT();
+    const packageDir = dt.pkgDir("with-nested-package-json");
+    
+    // Set up main package files
+    packageDir
+      .set(
+        "package.json",
+        JSON.stringify({
+          name: "@types/with-nested-package-json",
+        }),
+      )
+      .set("index.d.ts", "declare const x: number;")
+      .set("tsconfig.json", `{ "files": ["index.d.ts"] }`);
+    
+    // Add nested package.json files in subdirectories
+    packageDir.subdir("src").set("package.json", JSON.stringify({ type: "module" }));
+    packageDir.subdir("src").set("index.d.ts", "export const srcVar: string;");
+    packageDir.subdir("lib").set("package.json", JSON.stringify({ type: "commonjs" })); 
+    packageDir.subdir("lib").set("index.d.ts", "export const libVar: number;");
+
+    const versions = createTypingsVersionRaw("with-nested-package-json", {}, {});
+    const data = new TypingsData(dt.fs, versions["1.0"], true);
+    
+    const files = data.getFiles();
+    
+    // Should include both declaration files and nested package.json files
+    expect(files).toContain("index.d.ts");
+    expect(files).toContain("src/index.d.ts");
+    expect(files).toContain("lib/index.d.ts");
+    expect(files).toContain("src/package.json");
+    expect(files).toContain("lib/package.json");
+    // Should NOT include the root package.json as it's handled specially
+    expect(files).not.toContain("package.json");
+  });
+
   describe("desc", () => {
     it("returns the name if latest version", () => {
       expect(data.desc).toBe("@types/known");