diff --git a/appveyor.yml b/appveyor.yml
index b3f3a64..a7fc013 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -47,7 +47,7 @@ environment:
 install:
   - "SET PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
   - conda update -yq --all
-  - conda install -yq conda-build jinja2 anaconda-client
+  - conda install -yq conda-build==2.1.17 jinja2 anaconda-client
   - conda config --add channels omnia
   - conda config --add channels conda-forge
   - powershell .\\devtools\\appveyor\\missing-headers.ps1
diff --git a/devtools/docker-build.sh b/devtools/docker-build.sh
index b7d1887..ac810a4 100755
--- a/devtools/docker-build.sh
+++ b/devtools/docker-build.sh
@@ -5,7 +5,7 @@ conda config --add channels omnia
 # Move the conda-forge channel to the top
 # Cannot just append omnia otherwise default would have higher priority
 conda config --add channels conda-forge
-conda install -yq conda\>=4.3 conda-build jinja2 anaconda-client
+conda install -yq conda\>=4.3 conda-build==2.1.17 jinja2 anaconda-client
 
 /io/conda-build-all -vvv --python $PY_BUILD_VERSION $UPLOAD -- /io/*
 
diff --git a/devtools/osx-build.sh b/devtools/osx-build.sh
index 01059b3..bc84fe1 100755
--- a/devtools/osx-build.sh
+++ b/devtools/osx-build.sh
@@ -12,7 +12,7 @@ bash Miniconda3-latest-MacOSX-x86_64.sh -b -p $HOME/anaconda;
 export PATH=$HOME/anaconda/bin:$PATH;
 conda config --add channels omnia;
 conda config --add channels conda-forge;
-conda install -yq conda\>=4.3 conda-env conda-build jinja2 anaconda-client;
+conda install -yq conda\>=4.3 conda-env conda-build==2.1.17 jinja2 anaconda-client;
 conda config --show;
 
 # Do this step last to make sure conda-build, conda-env, and conda updates come from the same channel first