diff --git a/.changeset/twelve-hotels-exist.md b/.changeset/twelve-hotels-exist.md
new file mode 100644
index 000000000..f26ee8c02
--- /dev/null
+++ b/.changeset/twelve-hotels-exist.md
@@ -0,0 +1,5 @@
+---
+"@pkgr/core": patch
+---
+
+feat: support findUp with `includeDir` option
diff --git a/packages/core/src/helpers.ts b/packages/core/src/helpers.ts
index d1025ef35..ae2dbb41c 100644
--- a/packages/core/src/helpers.ts
+++ b/packages/core/src/helpers.ts
@@ -33,7 +33,11 @@ export const tryExtensions = (filepath: string, extensions = EXTENSIONS) => {
   return ext == null ? '' : filepath + ext
 }
 
-export const findUp = (searchEntry: string, searchFile = 'package.json') => {
+export const findUp = (
+  searchEntry: string,
+  searchFileOrIncludeDir?: boolean | string,
+  includeDir?: boolean,
+) => {
   console.assert(path.isAbsolute(searchEntry))
 
   if (
@@ -49,8 +53,15 @@ export const findUp = (searchEntry: string, searchFile = 'package.json') => {
       : path.resolve(searchEntry, '..'),
   )
 
+  const isSearchFile = typeof searchFileOrIncludeDir === 'string'
+
+  const searchFile = isSearchFile ? searchFileOrIncludeDir : 'package.json'
+
   do {
-    const searched = tryFile(path.resolve(searchEntry, searchFile))
+    const searched = tryFile(
+      path.resolve(searchEntry, searchFile),
+      isSearchFile && includeDir,
+    )
     if (searched) {
       return searched
     }