diff --git a/.appveyor.yml b/.appveyor.yml
index 5e29de235..09078c237 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,4 +1,4 @@
-version: 2.1.2.{build}
+version: 2.2.0.{build}
 
 image: Visual Studio 2015
 platform: x64
diff --git a/R-package/DESCRIPTION b/R-package/DESCRIPTION
index 26850df0a..50c4bba85 100755
--- a/R-package/DESCRIPTION
+++ b/R-package/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: lightgbm
 Type: Package
 Title: Light Gradient Boosting Machine
-Version: 2.1.2
-Date: 2018-06-22
+Version: 2.2.0
+Date: 2018-09-17
 Authors@R: c(
 	person("Guolin", "Ke", email = "guolin.ke@microsoft.com", role = c("aut", "cre")),
 	person("Damien", "Soukhavong", email = "damien.soukhavong@skema.edu", role = c("ctb")),
diff --git a/VERSION.txt b/VERSION.txt
index d12dc7f81..ccbccc3dc 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-2.1.2.4
+2.2.0