diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index d155534c8..96c3fa8a4 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -11,14 +11,14 @@ steps:
   displayName: 'Run a one-line script'
 
 - script: |
-    brew update && brew upgrade cmake python && brew install gsl hdf5
+    brew update && brew upgrade cmake python
+    brew install boost gsl hdf5
     /usr/local/bin/python3 -m pip install -U pip wheel delocate cython
     git clone git://github.com/ecell/ecell4-base && cd ecell4-base
-    git checkout 19571332ad7d7cf96505484713d18d028e9462c5
     git submodule init && git submodule update && cmake -DPYTHON_EXECUTABLE:FILEPATH=/usr/local/bin/python3 -DNO_SHARED:BOOL=1 . && make
     delocate-listdeps python/dist/*.whl
     delocate-wheel python/dist/*.whl
     delocate-listdeps python/dist/*.whl
     delocate-addplat --rm-orig -x 10_9 -x 10_10 python/dist/*.whl
   displayName: 'Run a multi-line script'
-  
\ No newline at end of file
+