diff --git a/.github/workflows/default.yml b/.github/workflows/default.yml
index 826bbee..83cf5b2 100644
--- a/.github/workflows/default.yml
+++ b/.github/workflows/default.yml
@@ -6,16 +6,16 @@ jobs:
 
   sdist:
     if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         lfs: true
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.12'
     - name: Install dependencies
       run: |
         python -m pip install -U pip setuptools wheel
@@ -24,9 +24,9 @@ jobs:
         python setup.py sdist
         ls -lh dist
     - name: Upload artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
-        name: dist
+        name: dist-src
         path: dist
 
 
@@ -37,8 +37,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04]
-        pyver: [cp311-cp311]
+        os: [ubuntu-22.04]
+        pyver: [cp312-cp312]
         arch: [x86_64, aarch64]
 
     env:
@@ -47,16 +47,16 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         lfs: true
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.12'
     - name: Set up QEMU
       id: qemu
-      uses: docker/setup-qemu-action@v2
+      uses: docker/setup-qemu-action@v3
     - name: Show available platforms
       run: echo ${{ steps.qemu.outputs.platforms }}
     - name: Install dependencies
@@ -89,9 +89,9 @@ jobs:
                 dist/backend.ai_krunner_static_gnu-${PKGVER}-py3-none-${GLIBC_PTAG}.${MUSL_PTAG}.${MACOS_PTAG}.whl
         ls -lh dist
     - name: Upload artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
-        name: dist
+        name: dist-${{ matrix.os }}-${{ matrix.pyver }}-${{ matrix.arch }}
         path: dist
 
 
@@ -103,21 +103,14 @@ jobs:
       url: https://pypi.org/p/backend.ai-krunner-static-gnu
     permissions:
       id-token: write
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.11"
-      - name: Install dependencies
-        run: |
-          python -m pip install -U pip setuptools wheel
       - name: Download distributions
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
-          name: dist
+          pattern: dist-*
+          merge-multiple: true
           path: dist
       - name: >-
           Publish 🐍📦 to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
\ No newline at end of file
+        uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/README.md b/README.md
index 27de2a5..77e95b4 100644
--- a/README.md
+++ b/README.md
@@ -45,10 +45,11 @@ binaries and does not work as intended.  Just refer this repository on how we bu
 ```console
 $ git clone https://github.com/lablup/backend.ai-krunner-{distro} krunner-{distro}
 $ cd krunner-{distro}
-$ pyenv virtualenv 3.11.2 venv-krunner  # you may share the same venv with other krunner projects
+$ pyenv virtualenv 3.12.2 venv-krunner  # you may share the same venv with other krunner projects
 $ pyenv local venv-krunner
 $ pip install -U pip setuptools
-$ pip install -U click -e .
+$ pip install -U -r build/requirements.txt
+$ pip install -U -e .
 ```
 
 ## How to update
diff --git a/requirements/build.txt b/requirements/build.txt
index 87b32d8..3509f99 100644
--- a/requirements/build.txt
+++ b/requirements/build.txt
@@ -1 +1 @@
-Click~=8.0
+Click~=8.1
diff --git a/src/ai/backend/krunner/static_gnu/__init__.py b/src/ai/backend/krunner/static_gnu/__init__.py
index 72aa758..6287d25 100644
--- a/src/ai/backend/krunner/static_gnu/__init__.py
+++ b/src/ai/backend/krunner/static_gnu/__init__.py
@@ -1 +1 @@
-__version__ = "4.1.1"
+__version__ = "4.2.0rc1"
diff --git a/src/ai/backend/krunner/static_gnu/krunner-env.static-gnu.dockerfile b/src/ai/backend/krunner/static_gnu/krunner-env.static-gnu.dockerfile
index e851a74..93e82c1 100644
--- a/src/ai/backend/krunner/static_gnu/krunner-env.static-gnu.dockerfile
+++ b/src/ai/backend/krunner/static_gnu/krunner-env.static-gnu.dockerfile
@@ -29,7 +29,7 @@ RUN chmod +x ${PREFIX}/bin/ttyd
 RUN cd ${PREFIX}; \
     tar cf /root/image.tar ./*
 
-LABEL ai.backend.krunner.version=11
+LABEL ai.backend.krunner.version=12
 CMD ["${PREFIX}/bin/python"]
 
 # vim: ft=dockerfile
diff --git a/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.dockerfile b/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.dockerfile
index 1ebe6c7..9a0b51f 100644
--- a/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.dockerfile
+++ b/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.dockerfile
@@ -6,7 +6,7 @@ ARG PREFIX=/opt/backend.ai
 ARG ARCH=x86_64
 
 ENV PATH=${PREFIX}/bin:$PATH \
-    PYTHON_VERSION=3.11.1 \
+    PYTHON_VERSION=3.12.2 \
     LANG=C.UTF-8
 
 RUN <<-EOF
@@ -27,9 +27,9 @@ RUN <<-EOF
     mkdir -p ${PREFIX}
     cd /root
     if [ "${ARCH}" = "x86_64" ]; then
-      wget -q -O python.tar.zst "https://github.com/indygreg/python-build-standalone/releases/download/20230116/cpython-3.11.1+20230116-x86_64_v2-unknown-linux-gnu-pgo-full.tar.zst"
+      wget -q -O python.tar.zst "https://github.com/indygreg/python-build-standalone/releases/download/20240224/cpython-3.12.2+20240224-x86_64_v2-unknown-linux-gnu-pgo-full.tar.zst"
     else
-      wget -q -O python.tar.zst "https://github.com/indygreg/python-build-standalone/releases/download/20230116/cpython-3.11.1+20230116-aarch64-unknown-linux-gnu-noopt-full.tar.zst"
+      wget -q -O python.tar.zst "https://github.com/indygreg/python-build-standalone/releases/download/20240224/cpython-3.12.2+20240224-aarch64-unknown-linux-gnu-noopt-full.tar.zst"
     fi
     tar -I zstd -xC . --strip-components=1 -f python.tar.zst
     mv /root/install/* ${PREFIX}/
diff --git a/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.txt b/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.txt
index 2c07333..e4fba21 100644
--- a/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.txt
+++ b/src/ai/backend/krunner/static_gnu/krunner-python.static-gnu.txt
@@ -1 +1 @@
-3.11
+3.12
diff --git a/src/ai/backend/krunner/static_gnu/krunner-version.static-gnu.txt b/src/ai/backend/krunner/static_gnu/krunner-version.static-gnu.txt
index b4de394..3cacc0b 100644
--- a/src/ai/backend/krunner/static_gnu/krunner-version.static-gnu.txt
+++ b/src/ai/backend/krunner/static_gnu/krunner-version.static-gnu.txt
@@ -1 +1 @@
-11
+12
\ No newline at end of file
diff --git a/src/ai/backend/krunner/static_gnu/krunner-wheels.static-gnu.dockerfile b/src/ai/backend/krunner/static_gnu/krunner-wheels.static-gnu.dockerfile
index 87c6dfc..20a611a 100644
--- a/src/ai/backend/krunner/static_gnu/krunner-wheels.static-gnu.dockerfile
+++ b/src/ai/backend/krunner/static_gnu/krunner-wheels.static-gnu.dockerfile
@@ -1,7 +1,7 @@
 ARG ARCH=x86_64
 FROM quay.io/pypa/manylinux2014_${ARCH}
 
-ENV PATH=$PATH:/opt/python/cp311-cp311/bin
+ENV PATH=$PATH:/opt/python/cp312-cp312/bin
 
 COPY requirements.txt /root/
 
diff --git a/src/ai/backend/krunner/static_gnu/requirements.txt b/src/ai/backend/krunner/static_gnu/requirements.txt
index 1e6963c..0f8246f 100644
--- a/src/ai/backend/krunner/static_gnu/requirements.txt
+++ b/src/ai/backend/krunner/static_gnu/requirements.txt
@@ -1,8 +1,7 @@
-async_timeout~=4.0
-pyzmq~=25.0
-uvloop~=0.17
-attrs~=22.1
+pyzmq~=25.1
+uvloop~=0.19
+attrs~=23.2
 janus~=1.0
 msgpack~=1.0
-jupyter-client~=7.4.5
-setproctitle~=1.3.2
+jupyter-client~=8.6.1
+setproctitle~=1.3.3