diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 97e0b6b..9a7ad7f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,7 @@ jobs:
         python -m pip install -r requirements.txt
         
         Invoke-WebRequest -Uri https://github.com/upx/upx/releases/download/v3.96/upx-3.96-win64.zip -OutFile upx.zip
-        Expand-Archive upx.zip ${GITHUB_WORKSPACE} upx
+        Expand-Archive upx.zip $env:GITHUB_WORKSPACE upx
         $upxPath = "${GITHUB_WORKSPACE}\upx"
         [System.Environment]::SetEnvironmentVariable("PATH", $env:PATH + ";" + $upxPath, [System.EnvironmentVariableTarget]::Process)