diff --git a/.ci/macos-steps.yaml b/.ci/macos-steps.yaml
index 99c11c5df1..7439d0b2b2 100644
--- a/.ci/macos-steps.yaml
+++ b/.ci/macos-steps.yaml
@@ -16,7 +16,6 @@ steps:
     unset BOOST_ROOT
     pip install cython numpy pandas zipp
     brew install openblas armadillo boost
-    brew update
 
     if [ "a$(julia.version)" != "a" ]; then
       brew cask install julia