diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7f3915ae..19d3ddb6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,7 +75,7 @@ jobs:
       CFLAGS_LTO: ${{ contains(matrix.lua-version, 'bundle')  && (contains(matrix.os, 'windows') && '/LTCG' || '-flto') || '' }}
       CFLAGS: ${{ contains(matrix.os, 'windows') && '/O2' || '-O2 -fPIC' }} -g
       MACOSX_DEPLOYMENT_TARGET: "11.0"
-      LUPA_WITH_LUA_DLOPEN: true
+      LUPA_WITH_LUA_DLOPEN: ${{ startsWith(matrix.os, 'windows') && 'false' || 'true' }}
 
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 89e85613..f6cda246 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -160,7 +160,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       MACOSX_DEPLOYMENT_TARGET: 11.0
-      LUPA_WITH_LUA_DLOPEN: true
+      LUPA_WITH_LUA_DLOPEN: ${{ startsWith(matrix.os, 'windows') && 'false' || 'true' }}
 
     steps:
     - uses: actions/checkout@v3