diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7651c9fe6..8b2a48eeb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -58,6 +58,10 @@ jobs:
       - uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           python-version: "3.12"
+          # This job only runs a stdlib-only script (tomllib/re/argparse); it never
+          # invokes uv, so no cache directory is ever created. setup-uv v9 errors in
+          # its post step when asked to save a cache path that does not exist.
+          enable-cache: false
       - run: python scripts/check-release-consistency.py
 
   test: