diff --git a/CHANGELOG b/CHANGELOG
index dcec358..a1d844e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-*SVN*
+*1.5.1_rc0* (March 8, 2007)
 
 * Merge the selector branch into trunk, bringing vast performance improvements, bug fixes, and near-complete CSS3 compliance to $$ and Selector.  Closes #7568.  [Andrew Dupont]
   Selector speed test: http://andrewdupont.net/test/double-dollar/
diff --git a/Rakefile b/Rakefile
index 79195cf..843780a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -5,7 +5,7 @@ PROTOTYPE_ROOT     = File.expand_path(File.dirname(__FILE__))
 PROTOTYPE_SRC_DIR  = File.join(PROTOTYPE_ROOT, 'src')
 PROTOTYPE_DIST_DIR = File.join(PROTOTYPE_ROOT, 'dist')
 PROTOTYPE_PKG_DIR  = File.join(PROTOTYPE_ROOT, 'pkg')
-PROTOTYPE_VERSION  = '1.5.1_pre0'
+PROTOTYPE_VERSION  = '1.5.1_rc0'
 
 task :default => [:dist, :package, :clean_package_source]