diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index de44687d09..58321dea78 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -66,8 +66,7 @@ jobs:
           CIBW_ARCHS: auto64
           CIBW_SKIP: cp36* cp37* pp*
           CIBW_BEFORE_ALL: brew install fftw || true
-          CIBW_ENVIRONMENT: >-
-            MACOSX_DEPLOYMENT_TARGET=13.0
+          MACOSX_DEPLOYMENT_TARGET: 13.0
 
       - uses: actions/upload-artifact@v4
         with:
@@ -96,7 +95,7 @@ jobs:
             CPPFLAGS="-I/opt/homebrew/opt/llvm/include"
             PATH="/opt/homebrew/opt/llvm/bin:$PATH"
             FFTW_DIR="/opt/homebrew/lib"
-            MACOSX_DEPLOYMENT_TARGET=14.0
+          MACOSX_DEPLOYMENT_TARGET: 14.0
 
       - uses: actions/upload-artifact@v4
         with: