diff --git a/.travis.yml b/.travis.yml
index d0124f1d..a0aeb1be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,7 @@ before_install:
   - sed -i "s/pandas==.*/pandas==$PANDAS_VERSION/" etc/requirements.txt
   - sed -i "s/scipy==.*/scipy==$SCIPY_VERSION/" etc/requirements.txt
 install:
-  - conda install conda-build --yes
+  - conda install conda-build=1.19.2 --yes
 
   - conda create -n testenv --yes -c quantopian pip python=$TRAVIS_PYTHON_VERSION numpy=$NUMPY_VERSION scipy=$SCIPY_VERSION libgfortran=1.0 ta-lib=0.4.9
   - source activate testenv
diff --git a/appveyor.yml b/appveyor.yml
index f561bbde..2ee0e797 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -102,7 +102,7 @@ install:
   - SET PATH=%PYTHON%;%PYTHON%\Scripts;%PATH%
 
   - conda info -a
-  - conda install conda-build
+  - conda install conda-build=1.19.2 --yes
   - ps: $NPY_VERSION_ARR=$env:NUMPY_VERSION -split '.', 0, 'simplematch'
   - ps: $env:NPY_VERSION_MAJ_MIN=$NPY_VERSION_ARR[0..1] -join ""
   - cmd: '%CMD_IN_ENV% conda build conda/bcolz -q --python=%PYTHON_VERSION% --numpy=%NPY_VERSION_MAJ_MIN%'