diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1396dd23..b20944e4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.6...3.14)
 message(STATUS "CMake version: " ${CMAKE_VERSION})
 project(TeNeS CXX)
-set(TENES_VERSION 2.1-dev)
+set(TENES_VERSION 2.1.0)
 
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
diff --git a/NEWS.md b/NEWS.md
index 163ff063..8070cd13 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,11 +1,22 @@
-# TeNeS v2.0.x Release Notes
+# TeNeS v2.1.x Release Notes
 
-## Changes between v2.0.0 and v1.3.4
+## Changes between v2.1.0 and v2.0.0
 
-- Real-time evolution (https://github.com/issp-center-dev/TeNeS/pull/68)
-- Multisite observables (https://github.com/issp-center-dev/TeNeS/pull/69)
-- Finite temperature calculation (https://github.com/issp-center-dev/TeNeS/pull/75)
-- The bond dimension of CTM is automatically reduced in updating CTM (https://github.com/issp-center-dev/TeNeS/pull/77)
+### New features
+
+- `tenes`
+    - Enabled to save tensors in the real-time evolution and the finite-temperature calculation ([#88][])
+    - Enabled to specify coefficient of observables ([#91][])
+- `tenes_std`
+    - Enabled to read multiple input files ([#92][])
 
 ### Bug fixes
-- The sign of Sy in `tenes_simple` is fixed (https://github.com/issp-center-dev/TeNeS/pull/78)
+- `tenes`
+    - Fixed a bug of combination of RSVD and CTMRG method with shrinkage of chi ([#86][], [#87][])
+
+
+[#86]: https://github.com/issp-center-dev/TeNeS/pull/86
+[#87]: https://github.com/issp-center-dev/TeNeS/pull/87
+[#88]: https://github.com/issp-center-dev/TeNeS/pull/88
+[#91]: https://github.com/issp-center-dev/TeNeS/pull/91
+[#92]: https://github.com/issp-center-dev/TeNeS/pull/92
diff --git a/docs/sphinx/en/conf.py b/docs/sphinx/en/conf.py
index 506a3a07..ce0b54d9 100644
--- a/docs/sphinx/en/conf.py
+++ b/docs/sphinx/en/conf.py
@@ -57,7 +57,7 @@
 # The short X.Y version.
 version = u'2.1'
 # The full version, including alpha/beta/rc tags.
-release = u'2.1-dev'
+release = u'2.1.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/sphinx/ja/conf.py b/docs/sphinx/ja/conf.py
index f5b0d84f..a8dfe9db 100644
--- a/docs/sphinx/ja/conf.py
+++ b/docs/sphinx/ja/conf.py
@@ -57,7 +57,7 @@
 # The short X.Y version.
 version = u'2.1'
 # The full version, including alpha/beta/rc tags.
-release = u'2.1-dev'
+release = u'2.1.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/misc/make_archive.sh b/misc/make_archive.sh
index 7bddd447..d37951db 100644
--- a/misc/make_archive.sh
+++ b/misc/make_archive.sh
@@ -1,3 +1,10 @@
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <version>"
+  exit 1
+fi
+
+version=$1
+
 ROOT_DIR=`pwd`
 if [ -z "$(grep 'project(TeNeS' $ROOT_DIR/CMakeLists.txt 2>/dev/null)" ]; then
   echo "ERROR: current directory is not the root directory of the TeNeS codes"
@@ -27,7 +34,6 @@ for lang in ja en; do
 done
 cd $ROOT_DIR
 
-version=2.1-dev
 
 git submodule update -i -r
 git-archive-all \
diff --git a/src/version.hpp b/src/version.hpp
index ad202a57..0d8c2ed0 100644
--- a/src/version.hpp
+++ b/src/version.hpp
@@ -17,6 +17,6 @@
 #ifndef TENES_SRC_VERSION_HPP_
 #define TENES_SRC_VERSION_HPP_
 
-#define TENES_VERSION "2.1-dev"
+#define TENES_VERSION "2.1.0"
 
 #endif // TENES_SRC_VERSION_HPP_
diff --git a/tool/tenes_simple.py b/tool/tenes_simple.py
index 1c4482ec..51d272b8 100644
--- a/tool/tenes_simple.py
+++ b/tool/tenes_simple.py
@@ -1349,7 +1349,7 @@ def tenes_simple(
         help="Save onsite terms as site Hamiltonians",
     )
     parser.add_argument(
-        "-v", "--version", dest="version", action="version", version="2.1-dev"
+        "-v", "--version", dest="version", action="version", version="2.1.0"
     )
 
     args = parser.parse_args()
diff --git a/tool/tenes_std.py b/tool/tenes_std.py
index 0579d1a9..4bb6468b 100644
--- a/tool/tenes_std.py
+++ b/tool/tenes_std.py
@@ -1272,7 +1272,7 @@ def to_toml(self, f: TextIO):
         "-o", "--output", dest="output", default="input.toml", help="Output TOML file"
     )
     parser.add_argument(
-        "-v", "--version", dest="version", action="version", version="2.1-dev"
+        "-v", "--version", dest="version", action="version", version="2.1.0"
     )
 
     args = parser.parse_args()