diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39e27cb..176b012 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,3 +43,18 @@ jobs:
         if: matrix.rust == 'nightly' || matrix.rust == 'beta' || matrix.rust == 'stable'
       - run: cargo check
         if: matrix.rust == 'nightly' || matrix.rust == 'beta' || matrix.rust == 'stable'
+
+  non-host:
+    name: Non-host toolchain on Windows
+    runs-on: windows-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: ./
+        with:
+          toolchain: stable-i686-pc-windows-msvc
+      - name: Check the active toolchain and compiler host
+        run: |
+          test "$(rustup show active-toolchain)" = "stable-i686-pc-windows-msvc (default)"
+          rustc --version --verbose | grep -Fx 'host: i686-pc-windows-msvc'
+        shell: bash
diff --git a/action.yml b/action.yml
index 744b29c..8e55e3f 100644
--- a/action.yml
+++ b/action.yml
@@ -89,13 +89,13 @@ runs:
       shell: bash
 
     - name: rustup toolchain install ${{steps.parse.outputs.toolchain}}
-      run: rustup toolchain install ${{steps.parse.outputs.toolchain}}${{steps.flags.outputs.targets}}${{steps.flags.outputs.components}} --profile minimal${{steps.flags.outputs.downgrade}} --no-self-update
+      run: rustup toolchain install ${{steps.parse.outputs.toolchain}}${{steps.flags.outputs.targets}}${{steps.flags.outputs.components}} --profile minimal${{steps.flags.outputs.downgrade}} --no-self-update --force-non-host
       env:
         RUSTUP_PERMIT_COPY_RENAME: 1
       shell: bash
 
     - name: rustup default ${{steps.parse.outputs.toolchain}}
-      run: rustup default ${{steps.parse.outputs.toolchain}}
+      run: rustup default ${{steps.parse.outputs.toolchain}} --force-non-host
       shell: bash
       continue-on-error: true  # https://github.com/dtolnay/rust-toolchain/issues/127