diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 9157a096..31070e54 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -83,12 +83,8 @@ jobs:
       - name: Build wheels for Linux
         if: matrix.os == 'ubuntu-latest'
         env:
-          CIBW_ENVIRONMENT: |
-            LDFLAGS="-L/usr/lib/x86_64-linux-gnu"
-            CFLAGS="-I/usr/include"
-            LIBRARY_PATH="/usr/lib/x86_64-linux-gnu:$LIBRARY_PATH"
-            C_INCLUDE_PATH="/usr/include:$C_INCLUDE_PATH"
-            LD_LIBRARY_PATH="/usr/lib/x86_64-linux-gnu:$LD_LIBRARY_PATH"
+          CIBW_ENVIRONMENT: "LDFLAGS='-L/usr/lib/x86_64-linux-gnu' CFLAGS='-I/usr/include' LIBRARY_PATH='/usr/lib/x86_64-linux-gnu:$LIBRARY_PATH' C_INCLUDE_PATH='/usr/include:$C_INCLUDE_PATH' LD_LIBRARY_PATH='/usr/lib/x86_64-linux-gnu:$LD_LIBRARY_PATH'"
+
         run: |
           # Check GSL library and include files
           if [ -f /usr/lib/x86_64-linux-gnu/libgsl.so ]; then