diff --git a/atom/browser/resources/mac/Info.plist b/atom/browser/resources/mac/Info.plist
index fc94607f2aa0..837baa8e11bf 100644
--- a/atom/browser/resources/mac/Info.plist
+++ b/atom/browser/resources/mac/Info.plist
@@ -17,7 +17,7 @@
   <key>CFBundleIconFile</key>
   <string>atom.icns</string>
   <key>CFBundleVersion</key>
-  <string>0.20.8</string>
+  <string>0.21.0</string>
   <key>LSMinimumSystemVersion</key>
   <string>10.8.0</string>
   <key>NSMainNibFile</key>
diff --git a/atom/browser/resources/win/atom.rc b/atom/browser/resources/win/atom.rc
index d40fa27f92d9..11f478185ce2 100644
--- a/atom/browser/resources/win/atom.rc
+++ b/atom/browser/resources/win/atom.rc
@@ -50,8 +50,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 0,20,8,0
- PRODUCTVERSION 0,20,8,0
+ FILEVERSION 0,21,0,0
+ PRODUCTVERSION 0,21,0,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -68,12 +68,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "GitHub, Inc."
             VALUE "FileDescription", "Atom-Shell"
-            VALUE "FileVersion", "0.20.8"
+            VALUE "FileVersion", "0.21.0"
             VALUE "InternalName", "atom.exe"
             VALUE "LegalCopyright", "Copyright (C) 2013 GitHub, Inc. All rights reserved."
             VALUE "OriginalFilename", "atom.exe"
             VALUE "ProductName", "Atom-Shell"
-            VALUE "ProductVersion", "0.20.8"
+            VALUE "ProductVersion", "0.21.0"
             VALUE "SquirrelAwareVersion", "1"
         END
     END
diff --git a/atom/common/atom_version.h b/atom/common/atom_version.h
index d7622b73a509..46dc596439a3 100644
--- a/atom/common/atom_version.h
+++ b/atom/common/atom_version.h
@@ -6,8 +6,8 @@
 #define ATOM_VERSION_H
 
 #define ATOM_MAJOR_VERSION 0
-#define ATOM_MINOR_VERSION 20
-#define ATOM_PATCH_VERSION 8
+#define ATOM_MINOR_VERSION 21
+#define ATOM_PATCH_VERSION 0
 
 #define ATOM_VERSION_IS_RELEASE 1
 
diff --git a/package.json b/package.json
index c77e27bc7242..ba9c8211766d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "atom-shell",
-  "version": "0.20.8",
+  "version": "0.21.0",
 
   "licenses": [
     {