diff --git a/.gitignore b/.gitignore
index e8af80e..caa8407 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@
 /underscore-1.5.1.tgz
 /tests-1.6.0.tar.bz2
 /underscore-1.6.0.tgz
+/tests-1.8.3.tar.bz2
+/underscore-1.8.3.tgz
diff --git a/dl-tests.sh b/dl-tests.sh
index eda1a89..cc80b51 100644
--- a/dl-tests.sh
+++ b/dl-tests.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-tag=1.6.0
+tag=1.8.3
 
 set -e
 
@@ -16,7 +16,7 @@ unset CDPATH
 pwd=$(pwd)
 
 pushd "$tmp"
-git clone git://github.com/documentcloud/underscore.git
+git clone git://github.com/jashkenas/underscore.git
 cd underscore
 git archive --prefix="test/" --format=tar tags/${tag}:test/ \
     | bzip2 > "$pwd"/tests-${tag}.tar.bz2
diff --git a/nodejs-underscore.spec b/nodejs-underscore.spec
index 072f3e6..d86c7ba 100644
--- a/nodejs-underscore.spec
+++ b/nodejs-underscore.spec
@@ -11,12 +11,12 @@
 %endif
 
 Name:       nodejs-underscore
-Version:    1.6.0
-Release:    5%{?dist}
+Version:    1.8.3
+Release:    1%{?dist}
 Summary:    JavaScript's functional programming helper library
 License:    MIT
 Group:      System Environment/Libraries
-URL:        https://github.com/documentcloud/underscore
+URL:        http://underscorejs.org/
 Source0:    http://registry.npmjs.org/underscore/-/underscore-%{version}.tgz
 # The test files are not included in the npm tarball.
 # Source1 is generated by running Source10, which pulls from the upstream
@@ -102,6 +102,9 @@ cp -pr underscore.js underscore-min.js underscore-min.map \
 
 
 %changelog
+* Thu Sep 03 2015 Dan Callaghan <dcallagh@redhat.com> - 1.8.3-1
+- update to upstream release 1.8.3
+
 * Wed Jun 17 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.6.0-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
 
diff --git a/sources b/sources
index 65538f0..dd09d59 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-d98b3849b5abd0e531b160173cb175b1  tests-1.6.0.tar.bz2
-563b1d9f13887d4bdcb6b06270a54825  underscore-1.6.0.tgz
+8f832f19eaec6737b7bccb22c41cad95  tests-1.8.3.tar.bz2
+fe90561f42737d435e1560455cb74f32  underscore-1.8.3.tgz