diff --git a/History.txt b/History.txt
index c34abdc..a7608cd 100644
--- a/History.txt
+++ b/History.txt
@@ -1,3 +1,8 @@
+=== jar-1.7.4 2012-08-02
+
+* updated to new Mozilla Rhino 1.7R4 release, notes:
+  https://developer.mozilla.org/en/New_in_Rhino_1.7R4
+
 === 2.0.0 2012-08-02
 This release is functionally the same as therubyrhino-1.73.5 as long 
 as the therubyrhino_jar-1.7.3 gem dependency is used along with it.
diff --git a/jar/rhino-1.7R3.jar b/jar/rhino-1.7R3.jar
deleted file mode 100644
index 878b0d9..0000000
Binary files a/jar/rhino-1.7R3.jar and /dev/null differ
diff --git a/jar/rhino-1.7R4.jar b/jar/rhino-1.7R4.jar
new file mode 100644
index 0000000..6f0dafb
Binary files /dev/null and b/jar/rhino-1.7R4.jar differ
diff --git a/therubyrhino_jar.gemspec b/therubyrhino_jar.gemspec
index 211b3e0..12b5232 100644
--- a/therubyrhino_jar.gemspec
+++ b/therubyrhino_jar.gemspec
@@ -3,12 +3,12 @@
 
 Gem::Specification.new do |s|
   s.name = %q{therubyrhino_jar}
-  s.version = '1.7.3'
+  s.version = '1.7.4'
   s.authors = ["Charles Lowell", "Karol Bucek"]
   s.email = ['cowboyd@thefrontside.net', 'self@kares.org']
   
   s.summary     = "Rhino's jars packed for therubyrhino"
-  s.description = %q{Rhino's js.jar packaged as a JRuby gem.}
+  s.description = %q{Rhino's js.jar classes packaged as a JRuby gem.}
   
   s.homepage = %q{http://github.com/cowboyd/therubyrhino}
   s.rubyforge_project = %q{therubyrhino}