diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f94e4ac4..6f61365f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -85,10 +85,10 @@ jobs:
       if: steps.cache-poetry.outputs.cache-hit != 'true'
       run: |
         if [ $RUNNER_OS = 'Windows' ]; then
-          set POETRY_HOME=C:\opt\poetry
-          python -m venv %POETRY_HOME%
-          %POETRY_HOME%\Scripts\pip install poetry==1.8.2
-          %POETRY_HOME%\Scripts\poetry --version
+          $POETRY_HOME = "C:\\opt\\poetry"
+          python -m venv $POETRY_HOME
+          $env:POETRY_HOME\Scripts\pip install poetry==1.8.2
+          $env:POETRY_HOME\Scripts\poetry --version
         elif [ $RUNNER_OS = 'macOS' ]; then
           export POETRY_HOME=$HOME/.poetry
           python3 -m venv $POETRY_HOME