diff --git a/.github/workflows/build_viewer.yml b/.github/workflows/build_viewer.yml
index d7b7fe74ba..c5c28dcdf7 100644
--- a/.github/workflows/build_viewer.yml
+++ b/.github/workflows/build_viewer.yml
@@ -51,7 +51,6 @@ jobs:
         if: runner.os == 'macOS'
         run: |
           /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
-          brew update
           brew install bash
           brew install gnu-sed