diff --git a/setup.py b/setup.py
index 4e9a644..759fad9 100644
--- a/setup.py
+++ b/setup.py
@@ -83,7 +83,7 @@
 from datetime import date
 
 # stable version
-VERSION = '3.2.0'
+VERSION = '3.3.0'
 # get the git hash
 # git_hash = subprocess.check_output(["git", "describe"]).strip().split('-')[-1][1:]
 # comment the next line to build wheel for stable version
diff --git a/tool/conda/singa/conda_build_config.yaml b/tool/conda/singa/conda_build_config.yaml
index ddef9d0..1226855 100644
--- a/tool/conda/singa/conda_build_config.yaml
+++ b/tool/conda/singa/conda_build_config.yaml
@@ -26,12 +26,12 @@
     - "/Applications/Xcode_11.7.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" # [osx]
 cudnn:                      # [linux]
     - "7.6.5 cuda10.2_0"    # [environ.get("CUDA")=="10.2"]
-    - "7.6.5 cuda10.0_0"    # [environ.get("CUDA")=="10.0"]
-    - "7.6.5 cuda9.0_0"     # [environ.get("CUDA")=="9.0"]
+#    - "7.6.5 cuda10.0_0"    # [environ.get("CUDA")=="10.0"]
+#    - "7.6.5 cuda9.0_0"     # [environ.get("CUDA")=="9.0"]
 dnnl:
     - 1.1
 python:
-    - 3.6
+    - 3.8
 #    - 3.7
 nccl:
     - 2.6.4.1               # [environ.get("CUDA")=="10.2"]
diff --git a/tool/conda/singa/meta.yaml b/tool/conda/singa/meta.yaml
index 5cacf3b..b639ba6 100644
--- a/tool/conda/singa/meta.yaml
+++ b/tool/conda/singa/meta.yaml
@@ -20,7 +20,7 @@
 # https://docs.conda.io/projects/conda-build/en/latest/resources/define-metadata.html#templating-with-jinja
 # {% set data = load_setup_py_data(setup_file='../../../python/singa/setup.py', from_recipe_dir=True) %}
 
-{% set version = "3.2.0" %}
+{% set version = "3.3.0" %}
 
 package:
   name: singa
diff --git a/tool/docker/devel/centos6/cuda10/Dockerfile.manylinux2014 b/tool/docker/devel/centos6/cuda10/Dockerfile.manylinux2014
index 80ca788..1472c9f 100644
--- a/tool/docker/devel/centos6/cuda10/Dockerfile.manylinux2014
+++ b/tool/docker/devel/centos6/cuda10/Dockerfile.manylinux2014
@@ -28,6 +28,7 @@
     openssh-server \
     pcre-devel \
     cmake \
+    rpm-build rpmdevtools \
     && yum clean all \
     && rm -rf /var/cache/yum/*
 
@@ -137,4 +138,4 @@
     && tar xfz mpich-3.3.2.tar.gz \
     && cd mpich-3.3.2 \
     && ./configure --prefix=/usr/local --disable-fortran \
-    && make && make install  && cd .. && rm -rf mpich-3.3.2
\ No newline at end of file
+    && make && make install  && cd .. && rm -rf mpich-3.3.2