diff --git a/README.md b/README.md
index ed3d9302e..b2959df24 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ To get mruby, you can download the stable version 3.2.0 from the official mruby
 GitHub repository or clone the trunk of the mruby source tree with the "git
 clone" command. You can also install and compile mruby using [ruby-install](https://github.com/postmodern/ruby-install), [ruby-build](https://github.com/rbenv/ruby-build) or [rvm](https://github.com/rvm/rvm).
 
-The stable version 3.2.0 of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/archive/3.2.0.zip](https://github.com/mruby/mruby/archive/3.2.0.zip)
+The release candidate version 3.3.0 of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/archive/3.3.0-rc.zip](https://github.com/mruby/mruby/archive/3.3.0-rc.zip)
 
 The latest development version of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/zipball/master](https://github.com/mruby/mruby/zipball/master)
 
diff --git a/include/mruby/version.h b/include/mruby/version.h
index c2fc83d87..fcdfb14d4 100644
--- a/include/mruby/version.h
+++ b/include/mruby/version.h
@@ -27,7 +27,7 @@ MRB_BEGIN_DECL
 /*
  * The version of Ruby used by mruby.
  */
-#define MRUBY_RUBY_VERSION "3.2"
+#define MRUBY_RUBY_VERSION "3.3"
 
 /*
  * Ruby engine.
@@ -42,7 +42,7 @@ MRB_BEGIN_DECL
 /*
  * Minor release version number.
  */
-#define MRUBY_RELEASE_MINOR 2
+#define MRUBY_RELEASE_MINOR 3
 
 /*
  * Tiny release version number.
@@ -57,7 +57,7 @@ MRB_BEGIN_DECL
 /*
  * Patch level string. (optional)
  */
-#define MRUBY_PATCHLEVEL_STR ""
+#define MRUBY_PATCHLEVEL_STR "RC"
 
 #ifndef MRUBY_PATCHLEVEL_STR
 # if MRUBY_PATCHLEVEL < 0
@@ -85,12 +85,12 @@ MRB_BEGIN_DECL
 /*
  * Release month.
  */
-#define MRUBY_RELEASE_MONTH 2
+#define MRUBY_RELEASE_MONTH 12
 
 /*
  * Release day.
  */
-#define MRUBY_RELEASE_DAY 24
+#define MRUBY_RELEASE_DAY 29
 
 /*
  * Release date as a string.