diff --git a/.github/workflows/run_test.yml b/.github/workflows/run_test.yml
index 2dc17cb..084d097 100644
--- a/.github/workflows/run_test.yml
+++ b/.github/workflows/run_test.yml
@@ -45,8 +45,9 @@ jobs:
         refreshenv
         $mkvmergePath = (Get-Command mkvmerge).Source
         $mkvtoolnixPath = Split-Path -Path $mkvmergePath -Parent
-        echo $mkvtoolnixPath >> $GITHUB_PATH
+        echo $mkvtoolnixPath | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
       # We need to conserve mkvtoolnix in the PATH env variable.
+      # From https://stackoverflow.com/a/73981698/15835974
 
     - name: Install pytest
       run: |