diff --git a/.travis.yml b/.travis.yml
index 90ed92e8..6d190892 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,14 +5,18 @@ env: # These should match the tox env list
     - TOXENV=py33
     - TOXENV=py34
     - TOXENV=pypy
-install: pip install coveralls tox --use-mirrors
+install: pip install coveralls tox
 script: tox
 # Special snowflake.  Our tests depend on making real commits.
 before_install:
-  - git config --global user.name "Travis CI"
-  - git config --global user.email "user@example.com"
-  # Our tests inspect some of *our* git history
-  - git fetch --unshallow
+    - git config --global user.name "Travis CI"
+    - git config --global user.email "user@example.com"
+    # Our tests inspect some of *our* git history
+    - git fetch --unshallow
 after_success:
     - coveralls
 sudo: false
+cache:
+    directories:
+        - $HOME/.cache/pip
+        - $HOME/.pre-commit
diff --git a/testing/resources/ruby_1_9_3_hooks_repo/hooks.yaml b/testing/resources/ruby_1_9_3_hooks_repo/hooks.yaml
index 8bcf4629..a3286048 100644
--- a/testing/resources/ruby_1_9_3_hooks_repo/hooks.yaml
+++ b/testing/resources/ruby_1_9_3_hooks_repo/hooks.yaml
@@ -2,5 +2,5 @@
     name: Ruby Hook
     entry: ruby_hook
     language: ruby
-    language_version: 1.9.3-p484
+    language_version: 1.9.3-p551
     files: \.rb$
diff --git a/tests/repository_test.py b/tests/repository_test.py
index f5a653fa..798cff67 100644
--- a/tests/repository_test.py
+++ b/tests/repository_test.py
@@ -146,7 +146,7 @@ def test_run_versioned_ruby_hook(tempdir_factory, store):
         tempdir_factory, store, 'ruby_1_9_3_hooks_repo',
         'ruby_hook',
         ['/dev/null'],
-        b'1.9.3\n484\nHello world from a ruby hook\n',
+        b'1.9.3\n551\nHello world from a ruby hook\n',
     )
 
 
diff --git a/tox.ini b/tox.ini
index b68d9272..f4fa0b08 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,6 @@ project = pre_commit
 envlist = py26,py27,py33,py34,pypy
 
 [testenv]
-install_command = pip install --use-wheel {opts} {packages}
 deps = -rrequirements-dev.txt
 passenv = HOME HOMEPATH LANG TERM
 commands =