diff --git a/.github/workflows/build_and_upload_PyPI.yml b/.github/workflows/build_and_upload_PyPI.yml
index e9d874ea..a524235c 100644
--- a/.github/workflows/build_and_upload_PyPI.yml
+++ b/.github/workflows/build_and_upload_PyPI.yml
@@ -13,7 +13,7 @@ jobs:
       matrix:
         os: [ 'ubuntu-latest', 'macos-latest' ]
         arch: [ 'x86_64' ]
-        cibw_python: [ 'cp36*', 'cp37*', 'cp38*', 'cp39*' ]
+        cibw_python: [ 'cp36*', 'cp37*', 'cp38*', ]
         manylinux: [ 'manylinux2014', 'manylinux1' ]
     steps:
       - uses: actions/checkout@v2
@@ -38,7 +38,7 @@ jobs:
           CIBW_BUILD: ${{ matrix.cibw_python }}
           CIBW_ARCHS: ${{ matrix.arch }}
           CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
-          CIBW_BEFORE_BUILD: "pip install -r requirements.txt"
+          CIBW_BEFORE_BUILD: "pip install -r requirements.txt cython>=0.29.21 numpy==1.19.0"
           CIBW_SKIP: "*-musllinux_*"
           CIBW_BEFORE_ALL_LINUX: >
             yum -y update &&
diff --git a/.github/workflows/manully_test_PYPI.yml b/.github/workflows/manully_test_PYPI.yml
index 36825dee..c3f934bd 100644
--- a/.github/workflows/manully_test_PYPI.yml
+++ b/.github/workflows/manully_test_PYPI.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         os: [ 'ubuntu-latest', 'macos-latest' ]
         arch: [ 'x86_64' ]
-        cibw_python: [ 'cp36*', 'cp37*', 'cp38*', 'cp39*' ]
+        cibw_python: [ 'cp36*', 'cp37*', 'cp38*' ]
         manylinux: [ 'manylinux2014', 'manylinux1' ]
     steps:
       - uses: actions/checkout@v2
@@ -36,7 +36,7 @@ jobs:
           CIBW_BUILD: ${{ matrix.cibw_python }}
           CIBW_ARCHS: ${{ matrix.arch }}
           CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
-          CIBW_BEFORE_BUILD: "pip install -r requirements.txt"
+          CIBW_BEFORE_BUILD: "pip install -r requirements.txt cython>=0.29.21 numpy==1.19.0"
           CIBW_SKIP: "*-musllinux_*"
           CIBW_BEFORE_ALL_LINUX: >
             yum -y update &&
diff --git a/docs/source/conf.py b/docs/source/conf.py
index ad4db2d5..a1c34078 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -43,7 +43,7 @@
 author = 'PaddlePaddle'
 
 # The full version, including alpha/beta/rc tags
-release = '2.2.4'
+release = '2.2.6'
 
 # -- General configuration ---------------------------------------------------