diff --git a/.github/workflows/deploy_docs.yml b/.github/workflows/deploy_docs.yml
index 87d9d947..9f53d37a 100644
--- a/.github/workflows/deploy_docs.yml
+++ b/.github/workflows/deploy_docs.yml
@@ -17,7 +17,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5.3.0
       with:
-        python-version: '3.12'
+        python-version: '3.10'
     - name: Install dependencies
       env:
         SKLEARN_ALLOW_DEPRECATED_SKLEARN_PACKAGE_INSTALL: True
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index d1fb8fb8..824d4c04 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: [3.12]
+        python-version: [3.10]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/pypi-test.yml b/.github/workflows/pypi-test.yml
index c6691a8d..04b91535 100644
--- a/.github/workflows/pypi-test.yml
+++ b/.github/workflows/pypi-test.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: [3.12]
+        python-version: [3.10]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/test-macos.yml b/.github/workflows/test-macos.yml
index 00b1367d..39aeb1c9 100644
--- a/.github/workflows/test-macos.yml
+++ b/.github/workflows/test-macos.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-latest, self-hosted]
-        python-version: [3.12]
+        python-version: [3.10]
 
     steps:
     - name: Checkout
@@ -47,8 +47,8 @@ jobs:
       shell: bash -l {0}
       run: |
         source ~/miniconda3/etc/profile.d/conda.sh
-        conda create -y -n pythainlpwork312 python=3.12
-        conda activate pythainlpwork312
+        conda create -y -n pythainlpwork310 python=3.10
+        conda activate pythainlpwork310
         conda info
         conda list
         python -m pip install --upgrade pip
diff --git a/.github/workflows/test-ubuntu.yml b/.github/workflows/test-ubuntu.yml
index f108af82..0a0760ed 100644
--- a/.github/workflows/test-ubuntu.yml
+++ b/.github/workflows/test-ubuntu.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: [3.12]
+        python-version: [3.10]
 
     steps:
     - name: Checkout
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index 5b367251..81aee546 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest]
-        python-version: [3.12]
+        python-version: [3.10]
 
     steps:
     - name: Checkout
diff --git a/Dockerfile b/Dockerfile
index 3a8b325e..2361983f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2016-2024 PyThaiNLP Project
 # SPDX-License-Identifier: Apache-2.0
 
-FROM python:3.12-slim
+FROM python:3.10-slim
 
 COPY . .