diff --git a/packages/expo-document-picker/CHANGELOG.md b/packages/expo-document-picker/CHANGELOG.md
index e2d26dc99e5a53..25b74ab9b6953d 100644
--- a/packages/expo-document-picker/CHANGELOG.md
+++ b/packages/expo-document-picker/CHANGELOG.md
@@ -14,6 +14,7 @@
 
 ### 🐛 Bug fixes
 
+- Fix `copyToCacheDirectory` on iOS. ([#23102](https://github.com/expo/expo/pull/23102) by [@aleqsio](https://github.com/aleqsio))
 - Fixed Android build warnings for Gradle version 8. ([#22537](https://github.com/expo/expo/pull/22537), [#22609](https://github.com/expo/expo/pull/22609) by [@kudo](https://github.com/kudo))
 
 ## 11.4.0 — 2023-05-08
diff --git a/packages/expo-document-picker/ios/DocumentPickerModule.swift b/packages/expo-document-picker/ios/DocumentPickerModule.swift
index 5a980059292626..50f1d44bf0ca86 100644
--- a/packages/expo-document-picker/ios/DocumentPickerModule.swift
+++ b/packages/expo-document-picker/ios/DocumentPickerModule.swift
@@ -110,7 +110,6 @@ public class DocumentPickerModule: Module, PickingResultHandler {
   }
 
   private func readDocumentDetails(documentUrl: URL, copy: Bool) throws -> DocumentInfo {
-    let pathExtension = documentUrl.pathExtension
     var newUrl = documentUrl
 
     guard let fileSystem = self.appContext?.fileSystem else {
@@ -122,13 +121,16 @@ public class DocumentPickerModule: Module, PickingResultHandler {
     }
 
     if copy {
-      let directory = fileSystem.cachesDirectory.appending("DocumentPicker")
-      let path = fileSystem.generatePath(inDirectory: directory, withExtension: pathExtension)
+      let cacheDirURL = URL(fileURLWithPath: fileSystem.cachesDirectory)
+      let directory = cacheDirURL.appendingPathComponent("DocumentPicker", isDirectory: true).path
+      let fileExtension = "." + documentUrl.pathExtension
+      let path = fileSystem.generatePath(inDirectory: directory, withExtension: fileExtension)
       newUrl = URL(fileURLWithPath: path)
+
       try FileManager.default.copyItem(at: documentUrl, to: newUrl)
     }
 
-    let mimeType = self.getMimeType(from: pathExtension)
+    let mimeType = self.getMimeType(from: documentUrl.pathExtension)
 
     return DocumentInfo(
       uri: newUrl.absoluteString,