diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9be1039..eae4fe7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,11 +8,14 @@ on:
     branches:
       - '**'
 
+env:
+  DEVELOPER_DIR: /Applications/Xcode_13.2.app/Contents/Developer
+
 jobs:
   test:
     name: Test
     runs-on: macOS-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: swift test
         run: swift test
diff --git a/Rearrange/NSTextRange+NSRange.swift b/Rearrange/NSTextRange+NSRange.swift
index bfc7236..677d432 100644
--- a/Rearrange/NSTextRange+NSRange.swift
+++ b/Rearrange/NSTextRange+NSRange.swift
@@ -45,7 +45,7 @@ public extension NSTextRange {
             return nil
         }
 
-        guard let end = provider.location?(docLocation, offsetBy: range.max) else {
+        guard let end = provider.location?(start, offsetBy: range.length) else {
             return nil
         }