diff --git a/.travis.yml b/.travis.yml
index 93ccfdc2537..d1b76a85608 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,13 +40,14 @@ matrix:
             - TEST_MODE='spectrum'
 
 #trouble with osx building due to segfault at cython (https://github.com/cython/cython/issues/2199)
-        - os: osx
-          language: generic
-          env:
-            - COMPILER=clang
-            - SETUP_CMD='test --args="--tardis-refdata=$HOME/tardis-refdata/"'
-            - TEST_MODE='spectrum'
-            - MINICONDA_URL='http://repo.continuum.io/miniconda/Miniconda2-latest-MacOSX-x86_64.sh'
+# and https://github.com/cython/cython/issues/2505
+#        - os: osx
+#          language: generic
+#          env:
+#            - COMPILER=clang
+#            - SETUP_CMD='test --args="--tardis-refdata=$HOME/tardis-refdata/"'
+#            - TEST_MODE='spectrum'
+#            - MINICONDA_URL='http://repo.continuum.io/miniconda/Miniconda2-latest-MacOSX-x86_64.sh'
 
 
         - python: 2.7
@@ -87,15 +88,9 @@ install:
    - cd $TRAVIS_BUILD_DIR
    - conda env create -f tardis_env27.yml
    - source activate tardis
-   #trouble with building due to segfault at cython (https://github.com/cython/cython/issues/2199)
-   #remove if we can get normal cython through conda
-   - git clone https://github.com/cython/cython
-   - cd cython
-   - git checkout c485b1b77264c3c75d090a3c526de24966830d42
-   - CFLAGS="$CFLAGS -D CYTHON_CLINE_IN_TRACEBACK=0" python setup.py install
-   - cd ..
 
 script:
+    - python -c "import Cython; print Cython.__version__"
     - echo CC=$COMPILER python setup.py $SETUP_CMD
     - CC=$COMPILER python setup.py $SETUP_CMD
 
diff --git a/tardis_env27.yml b/tardis_env27.yml
index 57c16774223..e25ff7ef4c9 100644
--- a/tardis_env27.yml
+++ b/tardis_env27.yml
@@ -15,7 +15,7 @@ dependencies:
 - matplotlib=2.0
 - astropy=1.3
 - numexpr=2.6
-#- Cython=0.28
+- Cython=0.28.4
 - networkx=1.10
 - pytest=3.0
 - pyyaml=3.12