diff --git a/.github/actions/install_nimble/action.yml b/.github/actions/install_nimble/action.yml
index 0688d8d..291c131 100644
--- a/.github/actions/install_nimble/action.yml
+++ b/.github/actions/install_nimble/action.yml
@@ -30,7 +30,7 @@ runs:
         fi
 
         if [[ '${{ inputs.os }}' == 'macos' ]]; then
-          OS=apple
+          OS=macosx
         else
           OS='${{ inputs.os }}'
         fi