diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe5c9670..eb2c33b2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,6 +88,9 @@ jobs:
       - name: Tests
         if: needs.scope.outputs.lane == 'full'
         run: uv run pytest
+      - name: Catalog compatibility with minimum packaging version
+        if: needs.scope.outputs.lane == 'full'
+        run: uv run --isolated --frozen --extra dev --with packaging==24.0 pytest tests/plugins/test_catalog.py -q
       - name: Dependency audit
         if: needs.scope.outputs.lane == 'full'
         run: |
diff --git a/HANDOFF.md b/HANDOFF.md
index 7d6d0f1c..246e4dfa 100644
--- a/HANDOFF.md
+++ b/HANDOFF.md
@@ -6,7 +6,7 @@
 - Merged selected-date output repair from retained raw data with single-task Cloud Run and BigQuery through [PR #548](https://github.com/harrisonoconnorhover/dander/pull/548).
 - Reused durable run identity, cancellation, history, replay, lease fencing, and conditional cleanup.
 - Added preview/start contracts, publication measurements, and operator documentation with explicit support limits.
-- Updated the curated catalog, Salesforce starter, and setup docs for Salesforce `0.3.2` and ServiceNow `0.2.3`; producer merge waits for verified publication.
+- Published and verified Salesforce `0.3.2` and ServiceNow `0.2.3`; merged the matching catalog, starter, and documentation through PR #550.
 
 ## Try It
 
@@ -20,7 +20,7 @@ Use the API examples in `docs/control-contracts.md` and `docs/output-repair.md`.
 - No live repair workload or paid qualification ran.
 - RC33 preparation: 4 release metadata tests, Ruff lint/format, metadata consistency, and contract drift checks passed; lockfile dependencies stayed fixed.
 - CI exposed 5 historical Redshift fixture failures after the version bump. Fixtures now explicitly bind RC32; all 32 focused benchmark/metadata tests pass. Candidate CI must rerun.
-- The corrected version candidate passed full protected CI. Catalog/starter changes passed 42 focused checks plus all 10 catalog cases, Ruff, strict typing, metadata, and unchanged regenerated contracts; final combined CI remains required.
+- PR #550 passed combined protected CI. A follow-up explicitly includes installed prereleases when checking compatibility; the catalog suite also runs against the declared minimum `packaging` version in CI.
 
 ## Decisions
 
@@ -33,7 +33,7 @@ Use the API examples in `docs/control-contracts.md` and `docs/output-repair.md`.
 - Complete current aggregate billing reconciliation and bounded live repair; AWS sign-in now works.
 - Finish Druff's guided flow. The user approved its repository work and protected delivery.
 - Publish and consume the verified RC33 GitHub integration candidate after protected merge and exact-main CI; public PyPI RC20 stays unchanged.
-- Finish the approved Salesforce/ServiceNow compatibility releases; advertised pins still target Dander 0.7.
+- Complete the protected prerelease comparison fix and final RC33 combined package check. Both connector releases are published and their downloaded wheels passed the existing 93 Salesforce and 23 ServiceNow tests.
 
 ## Review First
 
diff --git a/src/dander/plugins/catalog.py b/src/dander/plugins/catalog.py
index 8779ed92..9a3e01e6 100644
--- a/src/dander/plugins/catalog.py
+++ b/src/dander/plugins/catalog.py
@@ -54,7 +54,9 @@ def as_dict(
     ) -> dict[str, object]:
         """Project the catalog entry into the stable HTTP/CLI data shape."""
         try:
-            compatible = Version(dander_version) in SpecifierSet(self.dander_specifier)
+            compatible = SpecifierSet(self.dander_specifier).contains(
+                Version(dander_version), prereleases=True
+            )
         except InvalidVersion:
             compatible = False
         return {