diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1148cfef..d6f43ada 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,8 +17,7 @@ env:
   OPENSSL_SOURCE_PATH: ${{ github.workspace }}/src/openssl
   PYTHON_INSTALL_PATH: ${{ github.workspace }}/bin/python
   PYTHON_SOURCE_PATH: ${{ github.workspace }}/src/cpython
-  CFLAGS: -DOPENSSL_TLS_SECURITY_LEVEL=2 -DOPENSSL_NO_SSL2_METHOD -DOPENSSL_NO_SSL2 -DOPENSSL_NO_SSL3_METHOD -DOPENSSL_NO_SSL3 -DOPENSSL_NO_TLS1_METHOD -DOPENSSL_NO_TLS1 -DOPENSSL_NO_TLS1_1_METHOD -DOPENSSL_NO_TLS1_1
-  
+
 jobs:
   build:
     runs-on: ${{ matrix.os }}
@@ -193,15 +192,18 @@ jobs:
             echo "MACOSX_DEPLOYMENT_TARGET=10.15" >> $GITHUB_ENV
             echo "PYTHON=${PYTHON_INSTALL_PATH}/bin/python3" >> $GITHUB_ENV
             echo "PIP_ARGS=--no-binary=:all:" >> $GITHUB_ENV
+            CFLAGS="-DOPENSSL_TLS_SECURITY_LEVEL=2 -DOPENSSL_NO_SSL2_METHOD -DOPENSSL_NO_SSL2 -DOPENSSL_NO_SSL3_METHOD -DOPENSSL_NO_SSL3 -DOPENSSL_NO_TLS1_METHOD -DOPENSSL_NO_TLS1 -DOPENSSL_NO_TLS1_1_METHOD -DOPENSSL_NO_TLS1_1"
           elif [[ "${RUNNER_OS}" == "Linux" ]]; then
             MAKE=make
             MAKEOPT="-j$(nproc)"
             PERL=perl
+            CFLAGS="-DOPENSSL_TLS_SECURITY_LEVEL=2 -DOPENSSL_NO_SSL2_METHOD -DOPENSSL_NO_SSL2 -DOPENSSL_NO_SSL3_METHOD -DOPENSSL_NO_SSL3 -DOPENSSL_NO_TLS1_METHOD -DOPENSSL_NO_TLS1 -DOPENSSL_NO_TLS1_1_METHOD -DOPENSSL_NO_TLS1_1"
             echo "PYTHON=${PYTHON_INSTALL_PATH}/bin/python3" >> $GITHUB_ENV
           elif [[ "${RUNNER_OS}" == "Windows" ]]; then
             MAKE=nmake
             MAKEOPT=""
             PERL="c:\strawberry\perl\bin\perl.exe"
+            CFLAGS="-D\"OPENSSL_TLS_SECURITY_LEVEL=2\" -D\"OPENSSL_NO_SSL2_METHOD\" -D\"OPENSSL_NO_SSL2\" -D\"OPENSSL_NO_SSL3_METHOD\" -D\"OPENSSL_NO_SSL3\" -D\"OPENSSL_NO_TLS1_METHOD\" -D\"OPENSSL_NO_TLS1\" -D\"OPENSSL_NO_TLS1_1_METHOD\" -D\"OPENSSL_NO_TLS1_1\""
             LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${PYTHON_SOURCE_PATH}/PCbuild/${PYEXTERNALS_PATH}"
             echo "PYTHON=${PYTHON_SOURCE_PATH}/PCbuild/${PYEXTERNALS_PATH}/python.exe" >> $GITHUB_ENV
             echo "GAM_ARCHIVE_ARCH=${GAM_ARCHIVE_ARCH}" >> $GITHUB_ENV