diff --git a/.github/workflows/cli-package-validation.yml b/.github/workflows/cli-package-validation.yml
index 504309e02a..b9fbdac653 100644
--- a/.github/workflows/cli-package-validation.yml
+++ b/.github/workflows/cli-package-validation.yml
@@ -147,6 +147,9 @@ jobs:
         uses: mlugg/setup-zig@d1434d08867e3ee9daa34448df10607b98908d29 # v2
         with:
           version: 0.16.0
+          # zig only links here; its global cache would be saved under a fresh
+          # key every run and crowd out the caches that matter.
+          use-cache: false
       - name: Install cargo-zigbuild
         if: startsWith(matrix.target, 'linux-')
         uses: taiki-e/install-action@1ed6d7be6168f6c9046541087ff549b6bc581fdf # v2