diff --git a/.gitignore b/.gitignore
index 9a177b1..f6d2e55 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,10 @@ notebooks/.ipynb_checkpoints/
 notebooks/Gemfile.lock
 callgrind.out.*
 *~
+
+*.so
+*.cmake
+CMakeFiles/
+CMakeCache.txt
+Makefile
+install_manifest.txt
diff --git a/.travis.yml b/.travis.yml
index 3792d31..f82acb8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,9 @@ matrix:
   include:
     - os: osx
       rvm: 1.9.3
+  allow_failures:
+    - os: osx
+      rvm: 1.9.3
 
 install:
   - export RUBY_SOURCE_DIR=`pwd`
@@ -38,7 +41,7 @@ install:
   - source bin/install_travis.sh
 
   # Build C++ library
-  - source bin/test_travis.sh
+  - bin/test_travis.sh
 
   # Setup travis for Ruby wrappers
   - cd $RUBY_SOURCE_DIR
@@ -48,10 +51,11 @@ script:
   # Build ruby gem
   - gem build symengine.gemspec
   # Install ruby gem
-  - gem install symengine-0.1.0.gem --user --verbose -- -DSymEngine_DIR=$our_install_dir
+  - gem install symengine-0.1.0.gem --install-dir $HOME --verbose -- -DSymEngine_DIR=$our_install_dir
+
   # Test ruby gem
   - gem install gem-path --no-ri --no-rdoc
-  - cd `gem path symengine`
+  - cd $HOME/gems/symengine-0.1.0/
   - bundle exec rspec
 
 notifications: