diff --git a/.travis.yml b/.travis.yml
index fbc09158..4ed48f9e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,13 +39,13 @@ install:
 before_script:
   - pip freeze | sort
 script:
-  - conda build conda/bcolz -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN
-  - conda build conda/cyordereddict -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN
-  - conda build conda/logbook -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN
-  - conda build conda/ta-lib -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN
+  - conda build conda/bcolz -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN --skip-existing -c quantopian
+  - conda build conda/cyordereddict -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN --skip-existing -c quantopian
+  - conda build conda/logbook -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN --skip-existing -c quantopian
+  - conda build conda/ta-lib -q --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN --skip-existing -c quantopian
   # unshallow the clone so the conda build can clone it.
   - git fetch --unshallow
-  - conda build conda/zipline --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN
+  - conda build conda/zipline --python=$TRAVIS_PYTHON_VERSION --numpy=$NPY_VERSION_MAJ_MIN -c quantopian
 
   - nosetests tests/
   - flake8 zipline tests
diff --git a/appveyor.yml b/appveyor.yml
index 05ce7a6c..2aa411fc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -102,11 +102,11 @@ install:
   # https://blog.ionelmc.ro/2014/12/21/compiling-python-extensions-on-windows/ for 64bit C compilation
   - ps: copy .\ci\appveyor\vcvars64.bat "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64"
 
-  - cmd: '%CMD_IN_ENV% conda build conda/bcolz --python=%CONDA_PY% --numpy=%CONDA_NPY%'
-  - cmd: '%CMD_IN_ENV% conda build conda/cyordereddict --python=%CONDA_PY% --numpy=%CONDA_NPY%'
-  - cmd: '%CMD_IN_ENV% conda build conda/logbook --python=%CONDA_PY% --numpy=%CONDA_NPY%'
-  - cmd: '%CMD_IN_ENV% conda build conda/ta-lib --python=%CONDA_PY% --numpy=%CONDA_NPY%'
-  - cmd: '%CMD_IN_ENV% conda build conda/zipline --python=%CONDA_PY% --numpy=%CONDA_NPY%'
+  - cmd: '%CMD_IN_ENV% conda build conda/bcolz --python=%CONDA_PY% --numpy=%CONDA_NPY% --skip-existing -c quantopian'
+  - cmd: '%CMD_IN_ENV% conda build conda/cyordereddict --python=%CONDA_PY% --numpy=%CONDA_NPY% --skip-existing -c quantopian'
+  - cmd: '%CMD_IN_ENV% conda build conda/logbook --python=%CONDA_PY% --numpy=%CONDA_NPY% --skip-existing -c quantopian'
+  - cmd: '%CMD_IN_ENV% conda build conda/ta-lib --python=%CONDA_PY% --numpy=%CONDA_NPY% --skip-existing -c quantopian'
+  - cmd: '%CMD_IN_ENV% conda build conda/zipline --python=%CONDA_PY% --numpy=%CONDA_NPY% -c quantopian'
 
   - cmd: conda create -n testenv --yes --use-local pip python=%PYTHON_VERSION% numpy=%NUMPY_VERSION% scipy=%SCIPY_VERSION% ta-lib=0.4.9 bcolz=0.12.1
   - cmd: activate testenv