diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 254c942..a9a91e4 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -19,7 +19,8 @@ jobs:
             gcc-12-aarch64-linux-gnu \
             gcc-12-arm-linux-gnueabihf \
             gcc-12-mips-linux-gnu \
-            gcc-12-riscv64-linux-gnu
+            gcc-12-riscv64-linux-gnu \
+            gcc-12-multilib
 
       - name: Build object files
         run: bash tools/crosscompile.sh
@@ -67,7 +68,7 @@ jobs:
           # Multi-arch builds
           CIBW_ARCHS_LINUX: "x86_64 aarch64"
           CIBW_ARCHS_MACOS: "universal2" # x86_64 arm64
-          CIBW_ARCHS_WINDOWS: "AMD64" # x86
+          CIBW_ARCHS_WINDOWS: "amd64 x86"
           CIBW_TEST_REQUIRES: "pytest"
           CIBW_TEST_COMMAND: "pytest {package}/tests/test_coparun_module.py"
 
diff --git a/tools/crosscompile.sh b/tools/crosscompile.sh
index b4e92cd..8ace41d 100644
--- a/tools/crosscompile.sh
+++ b/tools/crosscompile.sh
@@ -28,6 +28,14 @@ gcc-12 -$OPT -c $SRC -o $DEST/stencils_AMD64_$OPT.o
 python tools/generate_stencils.py $SRC
 gcc-12 -$OPT -c $SRC -o $DEST/stencils_x86_64_$OPT.o
 
+# Windows x86
+python tools/generate_stencils.py --abi ms $SRC
+gcc-12 -m32 -$OPT -c $SRC -o $DEST/stencils_x86_$OPT.o
+
+# Native i686
+python tools/generate_stencils.py $SRC
+gcc-12 -m32 -$OPT -c $SRC -o $DEST/stencils_i686_$OPT.o
+
 # ARM64 linux (aarch64)
 aarch64-linux-gnu-gcc-12 -$OPT -c $SRC -o $DEST/stencils_aarch64_$OPT.o