diff --git a/packages/underscore-tests/.gitignore b/packages/deprecated/underscore-tests/.gitignore
similarity index 100%
rename from packages/underscore-tests/.gitignore
rename to packages/deprecated/underscore-tests/.gitignore
diff --git a/packages/underscore-tests/README.md b/packages/deprecated/underscore-tests/README.md
similarity index 100%
rename from packages/underscore-tests/README.md
rename to packages/deprecated/underscore-tests/README.md
diff --git a/packages/underscore-tests/each_test.js b/packages/deprecated/underscore-tests/each_test.js
similarity index 100%
rename from packages/underscore-tests/each_test.js
rename to packages/deprecated/underscore-tests/each_test.js
diff --git a/packages/underscore-tests/package.js b/packages/deprecated/underscore-tests/package.js
similarity index 87%
rename from packages/underscore-tests/package.js
rename to packages/deprecated/underscore-tests/package.js
index 24cad23716..027b6de21f 100644
--- a/packages/underscore-tests/package.js
+++ b/packages/deprecated/underscore-tests/package.js
@@ -2,7 +2,8 @@ Package.describe({
   // These tests can't be directly in the underscore packages since
   // Tinytest depends on underscore
   summary: "Tests for the underscore package",
-  version: '1.0.8'
+  version: '1.0.8',
+  deprecated: true
 });
 
 Package.onTest(function (api) {
diff --git a/packages/underscore/.gitignore b/packages/deprecated/underscore/.gitignore
similarity index 100%
rename from packages/underscore/.gitignore
rename to packages/deprecated/underscore/.gitignore
diff --git a/packages/underscore/README.md b/packages/deprecated/underscore/README.md
similarity index 100%
rename from packages/underscore/README.md
rename to packages/deprecated/underscore/README.md
diff --git a/packages/underscore/package.js b/packages/deprecated/underscore/package.js
similarity index 97%
rename from packages/underscore/package.js
rename to packages/deprecated/underscore/package.js
index 483509a727..e101a7ff5d 100644
--- a/packages/underscore/package.js
+++ b/packages/deprecated/underscore/package.js
@@ -1,6 +1,7 @@
 Package.describe({
   summary: "Collection of small helpers: _.map, _.each, ...",
-  version: '1.0.10'
+  version: '1.0.10',
+  deprecated: true
 });
 
 Package.onUse(function (api) {
diff --git a/packages/underscore/post.js b/packages/deprecated/underscore/post.js
similarity index 100%
rename from packages/underscore/post.js
rename to packages/deprecated/underscore/post.js
diff --git a/packages/underscore/pre.js b/packages/deprecated/underscore/pre.js
similarity index 100%
rename from packages/underscore/pre.js
rename to packages/deprecated/underscore/pre.js
diff --git a/packages/underscore/underscore.js b/packages/deprecated/underscore/underscore.js
similarity index 100%
rename from packages/underscore/underscore.js
rename to packages/deprecated/underscore/underscore.js