diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index ef03b0b13..22b82411a 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -28,6 +28,7 @@ jobs:
         HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: 1
       run: |
         brew tap osrf/simulation;
+        brew trust osrf/simulation;
         brew install --only-dependencies ${PACKAGE};
         # install :build dependencies of a formula
         brew install $(brew deps --1 --include-build ${PACKAGE})