diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 86de1c60..e0fdc7b1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -59,10 +59,10 @@ jobs:
           - rust: beta
           - rust: nightly
           - rust: nightly
-            os: macos-11
+            os: macos-latest
           - rust: nightly
-            os: windows-2019
-    runs-on: ${{ matrix.os || 'ubuntu-20.04' }}
+            os: windows-latest
+    runs-on: ${{ matrix.os || 'ubuntu-latest' }}
     timeout-minutes: 60
     steps:
       - uses: taiki-e/checkout-action@v1
@@ -72,8 +72,6 @@ jobs:
       - uses: taiki-e/install-action@cargo-hack
       - uses: taiki-e/install-action@cargo-minimal-versions
       - uses: taiki-e/install-action@nextest
-      - run: echo "RUSTFLAGS=${RUSTFLAGS} -C target-feature=+crt-static" >>"${GITHUB_ENV}"
-        if: startsWith(matrix.os, 'windows')
       - run: cargo test --workspace --all-features
       # TODO: move this test to tests/test.rs
       - run: cargo install --path . --debug
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f2f9cf12..54dbee74 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -39,15 +39,15 @@ jobs:
           - target: aarch64-unknown-linux-gnu
           - target: aarch64-unknown-linux-musl
           - target: aarch64-apple-darwin
-            os: macos-11
+            os: macos-12
           - target: x86_64-unknown-linux-gnu
           - target: x86_64-unknown-linux-musl
           - target: x86_64-apple-darwin
-            os: macos-11
+            os: macos-12
           - target: x86_64-pc-windows-msvc
             os: windows-2019
           - target: universal-apple-darwin
-            os: macos-11
+            os: macos-12
     runs-on: ${{ matrix.os || 'ubuntu-20.04' }}
     timeout-minutes: 60
     permissions: