diff --git a/docs/openapi/observer-client-contract/manifest.json b/docs/openapi/observer-client-contract/manifest.json
index 047219221..1a94f0fe1 100644
--- a/docs/openapi/observer-client-contract/manifest.json
+++ b/docs/openapi/observer-client-contract/manifest.json
@@ -14,7 +14,7 @@
     }
   ],
   "bundle_schema_identity": "solstone.observer-client-contract-bundle.schema.v1",
-  "bundle_semver": "5.0.9",
+  "bundle_semver": "5.0.10",
   "component_closure": [
     "CallosumEvent",
     "Error",
@@ -55,7 +55,7 @@
       "id": "bundle.projection_builder",
       "path": "solstone/convey/contract/observer_bundle.py",
       "role": "projection_builder",
-      "sha256": "baf1e5a4403733aeabf327d450cd26b6c6761e0523c30fe84389ad6f7cbace2a"
+      "sha256": "2ff19b6beb0e9b5631ec34c7a563d7e20811922559c757390b2c9c527a88ecab"
     },
     {
       "id": "bundle.recording",
@@ -139,7 +139,7 @@
       "id": "producer.observer_utils",
       "path": "solstone/apps/observer/utils.py",
       "role": "producer",
-      "sha256": "ea14c750c1eaf4a136d47d1f83803f4e74d2405780b8c8c6584850261d9b412d"
+      "sha256": "937aa9669c5b95bbc3c400a337f68e52bd0b783ed6579898ba75efb657b27e77"
     },
     {
       "id": "producer.protocol",
diff --git a/solstone/convey/contract/observer_bundle.py b/solstone/convey/contract/observer_bundle.py
index 17488044a..068b951ad 100644
--- a/solstone/convey/contract/observer_bundle.py
+++ b/solstone/convey/contract/observer_bundle.py
@@ -20,7 +20,7 @@ from solstone.convey.contract.assemble import CALLOSUM_REGISTRY, build_document
 from solstone.observe import protocol
 
 INITIAL_BUNDLE_SEMVER = "1.0.0"
-BUNDLE_SEMVER = "5.0.9"
+BUNDLE_SEMVER = "5.0.10"
 GENERATOR_IDENTITY = "solstone.convey.contract.observer_bundle.v1"
 BUNDLE_SCHEMA_IDENTITY = "solstone.observer-client-contract-bundle.schema.v1"
 SCHEMA_DIALECT_URI = "https://json-schema.org/draft/2020-12/schema"