diff --git a/CMakeLists.txt b/CMakeLists.txt
index a5eebef2eddd..3bffa6b07dcd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
-project(xgboost LANGUAGES CXX C VERSION 2.0.0)
+project(xgboost LANGUAGES CXX C VERSION 2.1.0)
include(cmake/Utils.cmake)
list(APPEND CMAKE_MODULE_PATH "${xgboost_SOURCE_DIR}/cmake/modules")
cmake_policy(SET CMP0022 NEW)
diff --git a/R-package/DESCRIPTION b/R-package/DESCRIPTION
index 9ceef2fda974..6eb0cdc2883b 100644
--- a/R-package/DESCRIPTION
+++ b/R-package/DESCRIPTION
@@ -1,8 +1,8 @@
Package: xgboost
Type: Package
Title: Extreme Gradient Boosting
-Version: 2.0.0.1
-Date: 2022-10-18
+Version: 2.1.0.1
+Date: 2023-08-17
Authors@R: c(
person("Tianqi", "Chen", role = c("aut"),
email = "tianqi.tchen@gmail.com"),
diff --git a/R-package/configure b/R-package/configure
index 19ea48a91234..3bbfa71503fb 100755
--- a/R-package/configure
+++ b/R-package/configure
@@ -1,6 +1,6 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for xgboost 2.0.0.
+# Generated by GNU Autoconf 2.71 for xgboost 2.1.0.
#
#
# Copyright (C) 1992-1996, 1998-2017, 2020-2021 Free Software Foundation,
@@ -607,8 +607,8 @@ MAKEFLAGS=
# Identity of this package.
PACKAGE_NAME='xgboost'
PACKAGE_TARNAME='xgboost'
-PACKAGE_VERSION='2.0.0'
-PACKAGE_STRING='xgboost 2.0.0'
+PACKAGE_VERSION='2.1.0'
+PACKAGE_STRING='xgboost 2.1.0'
PACKAGE_BUGREPORT=''
PACKAGE_URL=''
@@ -1225,7 +1225,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
-\`configure' configures xgboost 2.0.0 to adapt to many kinds of systems.
+\`configure' configures xgboost 2.1.0 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@@ -1287,7 +1287,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
- short | recursive ) echo "Configuration of xgboost 2.0.0:";;
+ short | recursive ) echo "Configuration of xgboost 2.1.0:";;
esac
cat <<\_ACEOF
@@ -1367,7 +1367,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
-xgboost configure 2.0.0
+xgboost configure 2.1.0
generated by GNU Autoconf 2.71
Copyright (C) 2021 Free Software Foundation, Inc.
@@ -1533,7 +1533,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
-It was created by xgboost $as_me 2.0.0, which was
+It was created by xgboost $as_me 2.1.0, which was
generated by GNU Autoconf 2.71. Invocation command line was
$ $0$ac_configure_args_raw
@@ -3412,7 +3412,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
-This file was extended by xgboost $as_me 2.0.0, which was
+This file was extended by xgboost $as_me 2.1.0, which was
generated by GNU Autoconf 2.71. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@@ -3467,7 +3467,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config='$ac_cs_config_escaped'
ac_cs_version="\\
-xgboost config.status 2.0.0
+xgboost config.status 2.1.0
configured by $0, generated by GNU Autoconf 2.71,
with options \\"\$ac_cs_config\\"
diff --git a/R-package/configure.ac b/R-package/configure.ac
index 1fb6ea35acc4..89f8635fe315 100644
--- a/R-package/configure.ac
+++ b/R-package/configure.ac
@@ -2,7 +2,7 @@
AC_PREREQ(2.69)
-AC_INIT([xgboost],[2.0.0],[],[xgboost],[])
+AC_INIT([xgboost],[2.1.0],[],[xgboost],[])
: ${R_HOME=`R RHOME`}
if test -z "${R_HOME}"; then
diff --git a/include/xgboost/version_config.h b/include/xgboost/version_config.h
index 8005b83919c7..70e5417af779 100644
--- a/include/xgboost/version_config.h
+++ b/include/xgboost/version_config.h
@@ -5,7 +5,7 @@
#define XGBOOST_VERSION_CONFIG_H_
#define XGBOOST_VER_MAJOR 2 /* NOLINT */
-#define XGBOOST_VER_MINOR 0 /* NOLINT */
+#define XGBOOST_VER_MINOR 1 /* NOLINT */
#define XGBOOST_VER_PATCH 0 /* NOLINT */
#endif // XGBOOST_VERSION_CONFIG_H_
diff --git a/jvm-packages/pom.xml b/jvm-packages/pom.xml
index baec6bd6bc04..738d5799469f 100644
--- a/jvm-packages/pom.xml
+++ b/jvm-packages/pom.xml
@@ -6,7 +6,7 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
pom
XGBoost JVM Package
JVM Package for XGBoost
diff --git a/jvm-packages/xgboost4j-example/pom.xml b/jvm-packages/xgboost4j-example/pom.xml
index e6ed8a6001b0..3a56615d6177 100644
--- a/jvm-packages/xgboost4j-example/pom.xml
+++ b/jvm-packages/xgboost4j-example/pom.xml
@@ -6,11 +6,11 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
xgboost4j-example
xgboost4j-example_${scala.binary.version}
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
jar
diff --git a/jvm-packages/xgboost4j-flink/pom.xml b/jvm-packages/xgboost4j-flink/pom.xml
index 8d51a9dcf9ce..6f700ca0a627 100644
--- a/jvm-packages/xgboost4j-flink/pom.xml
+++ b/jvm-packages/xgboost4j-flink/pom.xml
@@ -6,12 +6,12 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
xgboost4j-flink
xgboost4j-flink_${scala.binary.version}
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
2.2.0
diff --git a/jvm-packages/xgboost4j-gpu/pom.xml b/jvm-packages/xgboost4j-gpu/pom.xml
index 61f9fb1cbb1f..8a65afeb59ca 100644
--- a/jvm-packages/xgboost4j-gpu/pom.xml
+++ b/jvm-packages/xgboost4j-gpu/pom.xml
@@ -6,11 +6,11 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
xgboost4j-gpu_${scala.binary.version}
xgboost4j-gpu
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
jar
diff --git a/jvm-packages/xgboost4j-spark-gpu/pom.xml b/jvm-packages/xgboost4j-spark-gpu/pom.xml
index b7be69e69936..a29b4e056315 100644
--- a/jvm-packages/xgboost4j-spark-gpu/pom.xml
+++ b/jvm-packages/xgboost4j-spark-gpu/pom.xml
@@ -6,7 +6,7 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
xgboost4j-spark-gpu
xgboost4j-spark-gpu_${scala.binary.version}
diff --git a/jvm-packages/xgboost4j-spark/pom.xml b/jvm-packages/xgboost4j-spark/pom.xml
index d8f4cb9146c8..179b1c76254a 100644
--- a/jvm-packages/xgboost4j-spark/pom.xml
+++ b/jvm-packages/xgboost4j-spark/pom.xml
@@ -6,7 +6,7 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
xgboost4j-spark
xgboost4j-spark_${scala.binary.version}
diff --git a/jvm-packages/xgboost4j/pom.xml b/jvm-packages/xgboost4j/pom.xml
index 3fb133dc8c9d..46ee9158fad4 100644
--- a/jvm-packages/xgboost4j/pom.xml
+++ b/jvm-packages/xgboost4j/pom.xml
@@ -6,11 +6,11 @@
ml.dmlc
xgboost-jvm
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
xgboost4j
xgboost4j_${scala.binary.version}
- 2.0.0-SNAPSHOT
+ 2.1.0-SNAPSHOT
jar
diff --git a/python-package/pyproject.toml b/python-package/pyproject.toml
index 2bf463db6aa1..199e0f06cecb 100644
--- a/python-package/pyproject.toml
+++ b/python-package/pyproject.toml
@@ -7,7 +7,7 @@ build-backend = "packager.pep517"
[project]
name = "xgboost"
-version = "2.0.0-dev"
+version = "2.1.0-dev"
authors = [
{ name = "Hyunsu Cho", email = "chohyu01@cs.washington.edu" },
{ name = "Jiaming Yuan", email = "jm.yuan@outlook.com" }
diff --git a/python-package/xgboost/VERSION b/python-package/xgboost/VERSION
index d72f26267bc9..c10edc3fa750 100644
--- a/python-package/xgboost/VERSION
+++ b/python-package/xgboost/VERSION
@@ -1 +1 @@
-2.0.0-dev
+2.1.0-dev