diff --git a/.github/workflows/ci-test.yml b/.github/workflows/ci-test.yml
index 5aaccc1519..26149785da 100644
--- a/.github/workflows/ci-test.yml
+++ b/.github/workflows/ci-test.yml
@@ -70,6 +70,11 @@ jobs:
 
       - name: Setup Bun
         uses: ./.github/actions/setup-bun
+        with:
+          # ci-typecheck.yml's Linux job is the designated Linux cache
+          # saver (runs on every push, fast, low collision risk) — this job
+          # only restores, to avoid racing on the same {OS}-bun-{hash} key.
+          save-cache: false
 
       - name: Configure Git Identity
         run: |
diff --git a/.github/workflows/release-fork.yml b/.github/workflows/release-fork.yml
index 5e3c59f4ac..50ad2b689e 100644
--- a/.github/workflows/release-fork.yml
+++ b/.github/workflows/release-fork.yml
@@ -87,6 +87,13 @@ jobs:
       - name: Setup Bun
         if: inputs.platforms == '' || contains(inputs.platforms, matrix.name)
         uses: ./.github/actions/setup-bun
+        with:
+          # Linux and Windows bun caches are each owned by a single saver
+          # elsewhere (ci-typecheck.yml linux, ci-test.yml e2e windows) to
+          # avoid racing on the same {OS}-bun-{hash} key when this manual
+          # release build runs concurrently with a push-triggered CI run.
+          # macOS has no other job in the repo, so it's safe to save here.
+          save-cache: ${{ matrix.name == 'macos' }}
 
       - name: Build CLI
         if: inputs.platforms == '' || contains(inputs.platforms, matrix.name)