diff --git a/.github/workflows/generate_document.yml b/.github/workflows/generate_document.yml
index 4b8c69206..ed2f8abf4 100644
--- a/.github/workflows/generate_document.yml
+++ b/.github/workflows/generate_document.yml
@@ -48,7 +48,7 @@ jobs:
       - name: Build voicevox_core_python_api
         run: |
           cargo build -p voicevox_core_c_api -vv
-          maturin develop --manifest-path ./crates/voicevox_core_python_api/Cargo.toml --locked
+          poetry run maturin develop --manifest-path ./crates/voicevox_core_python_api/Cargo.toml --locked
       - name: Generate Sphinx document
         run: sphinx-build docs/apis/python_api public/apis/python_api
       - name: Generate Javadoc
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3b4f4e0da..b9f24e883 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -274,18 +274,17 @@ jobs:
         uses: ./.github/actions/rust-toolchain-from-file
       - run: |
           pip install --upgrade poetry
-          cd crates/voicevox_core_python_api
           poetry install --with dev --with test
       - run: cargo build -p voicevox_core_c_api -vv
-      - run: maturin build --manifest-path Cargo.toml --locked
-      - run: maturin develop --manifest-path Cargo.toml --locked
+      - run: poetry run maturin build --manifest-path Cargo.toml --locked
+      - run: poetry run maturin develop --manifest-path Cargo.toml --locked
       - name: 必要なDLLをコピーしてpytestを実行
         run: |
           cp -v ../../target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/onnxruntime.dll . || true
           cp -v ../../target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/libonnxruntime.so.* . || true
           cp -v ../../target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/libonnxruntime.*.dylib . || true
 
-          pytest
+          poetry run pytest
   build-and-test-java-api:
     strategy:
       fail-fast: false