diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index b7b77d0..d18ebb1 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -77,10 +77,15 @@ jobs:
       # as the same job for the same commit and Coveralls 422s all but one --
       # intermittently failing the build (PR #185). Coverage is the same on every
       # version, so publishing from one is no loss.
+      #
+      # continue-on-error: coverage reporting must never gate a merge. Without
+      # it a Coveralls outage (a 500 on 2026-09-28) fails this job, fail-fast
+      # cancels the rest of the matrix, and the required `ci-gate` goes red.
       - name: Publish to Coveralls
         env:
             GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         if: ${{ inputs.coveralls && matrix.python-version == '3.12' }}
+        continue-on-error: true
         run: |
           pipenv run coveralls --service=github