diff --git a/.github/workflows/CI-cygwin.yml b/.github/workflows/CI-cygwin.yml
index 8ed6a62d2..b70173dda 100644
--- a/.github/workflows/CI-cygwin.yml
+++ b/.github/workflows/CI-cygwin.yml
@@ -17,7 +17,7 @@ jobs:
         os: [windows-2019]
         arch: [x64, x86]
         packages: |
-          'gcc-g++-11.3.0-1'
+          "gcc-g++-11.3.0-1"
       fail-fast: false
 
     runs-on: ${{ matrix.os }}