diff --git a/.cargo/config.toml b/.cargo/config.toml
index 47684146c..47526e934 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,2 +1,6 @@
 [env]
 CARGO_WORKSPACE_DIR = { value = "", relative = true }
+
+# Windows環境でテストエラーになるのを防ぐために設定するworkaround
+# https://github.com/VOICEVOX/onnxruntime-rs/issues/3#issuecomment-1207381367
+ORT_OUT_DIR = { value = "target/debug/deps", relative = true }
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8f14b6ebe..a7521d133 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -58,16 +58,6 @@ jobs:
         with:
           # cargoのキャッシュが原因でテストが失敗する場合はバージョン部分をカウントアップすること
           key: "v1-cargo-test-cache-${{ matrix.additional-features }}-${{ matrix.os }}"
-      # FIXME: windows-2022 では、onnxruntime-sys のビルド時にダウンロードされる onnxruntime.dll に対してパスが通らないために、テストが行えない
-      #        原因が不明であるため、姑息的な回避策として target/debug/deps ディレクトリに onnxruntime.dll をコピーする。根本的な解決策を望む。
-      #        cf. https://github.com/VOICEVOX/voicevox_core/pull/140#issuecomment-1140276585
-      - name: Prepare onnxruntime.dll
-        if: matrix.os == 'windows-2022'
-        shell: bash
-        run: |
-          cargo build
-          find target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib -name onnxruntime.dll -ctime 0
-          find target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib -name onnxruntime.dll -ctime 0 | head -n 1 | xargs -i cp {} target/debug/deps/
       - run: cargo test --features generate-c-header,${{ matrix.additional-features }}
 
   build-unix-cpp-example:
diff --git a/README.md b/README.md
index 4d6ffbe96..0ade9ce42 100644
--- a/README.md
+++ b/README.md
@@ -162,9 +162,6 @@ cargo build --release
 ## コアライブラリのテスト
 
 ```bash
-# Windowsの場合は最初にonnxruntime.dllをカレントディレクトリにコピーする必要があります
-# find target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib -name onnxruntime.dll | head -n 1 | xargs -i cp {} target/debug/deps/
-
 cargo test
 ```
 
diff --git a/crates/voicevox_core/Cargo.toml b/crates/voicevox_core/Cargo.toml
index 68746157b..0e4f10fec 100644
--- a/crates/voicevox_core/Cargo.toml
+++ b/crates/voicevox_core/Cargo.toml
@@ -19,7 +19,7 @@ derive-getters = "0.2.0"
 derive-new = "0.5.9"
 libc = "0.2.126"
 once_cell = "1.10.0"
-onnxruntime = { git = "https://github.com/VOICEVOX/onnxruntime-rs.git", version = "0.0.28" }
+onnxruntime = { git = "https://github.com/VOICEVOX/onnxruntime-rs.git", version = "0.0.29" }
 serde = "1.0.137"
 serde_json = "1.0.81"
 thiserror = "1.0.31"