diff --git a/imperative/python/version_template.py b/imperative/python/version_template.py
index f45d439922daea36ef7b020dcabc852663c69da4..b4e3eb1fd96715c6839ae8a651f9dab5a234cbaa 100644
--- a/imperative/python/version_template.py
+++ b/imperative/python/version_template.py
@@ -6,4 +6,4 @@
 # Unless required by applicable law or agreed to in writing,
 # software distributed under the License is distributed on an
 # "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-__version__ = "1.6.0.dev"
+__version__ = "1.6.0rc1"
diff --git a/src/core/include/megbrain/version.h b/src/core/include/megbrain/version.h
index c8f84c64a54ae9cfb297633a1c72fe7c241a2239..8c5c47078da6486ef7cbabbad6b8e1498b8e10fd 100644
--- a/src/core/include/megbrain/version.h
+++ b/src/core/include/megbrain/version.h
@@ -12,7 +12,7 @@
 #pragma once
 
 #define MGB_MAJOR   8
-#define MGB_MINOR   9999
+#define MGB_MINOR   13
 #define MGB_PATCH   0
 //! whether it is development version
 #ifndef MGB_IS_DEV