diff --git a/.travis.yml b/.travis.yml
index 1b58ca5..5174211 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,7 +26,6 @@ install:
   - export PATH="$HOME/miniconda/bin:$PATH"
   - hash -r
   - conda config --set always_yes yes --set changeps1 no
-  - conda config --add channels conda-forge
   - conda update -q conda
   - conda install -n root _license
   - conda info -a
diff --git a/environment.yml b/environment.yml
index 09a94c6..3ad04c4 100644
--- a/environment.yml
+++ b/environment.yml
@@ -11,4 +11,3 @@ dependencies:
 - zlib=1.2.8=3
 - pip:
   - six==1.10.0
-  - tbb==0.1