diff --git a/.github/workflows/charm.yaml b/.github/workflows/charm.yaml
index 4b55004..28bfd19 100644
--- a/.github/workflows/charm.yaml
+++ b/.github/workflows/charm.yaml
@@ -61,6 +61,7 @@ jobs:
         uses: charmed-kubernetes/actions-operator@1.1.0
         with:
           provider: microk8s
+          channel: 1.27-strict/stable
           microk8s-addons: "storage dns rbac registry"
           juju-channel: 3.2/stable
       - name: Create local OCI images
diff --git a/charms/openfga-k8s/lib/charms/openfga_k8s/v0/openfga.py b/charms/openfga-k8s/lib/charms/openfga_k8s/v0/openfga.py
index 09d86f2..d4e5b3a 100644
--- a/charms/openfga-k8s/lib/charms/openfga_k8s/v0/openfga.py
+++ b/charms/openfga-k8s/lib/charms/openfga_k8s/v0/openfga.py
@@ -76,7 +76,7 @@ def _on_openfga_store_created(self, event: OpenFGAStoreCreateEvent):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 4
+LIBPATCH = 5
 
 logger = logging.getLogger(__name__)
 
@@ -88,27 +88,27 @@ class OpenFGAEvent(RelationEvent):
 
     @property
     def store_id(self):
-        return self.relation.data[self.relation.app].get("store_id")
+        return self.relation.data[self.relation.app].get("store_id", "")
 
     @property
     def token_secret_id(self):
-        return self.relation.data[self.relation.app].get("token_secret_id")
+        return self.relation.data[self.relation.app].get("token_secret_id", "")
     
     @property
     def token(self):
-        return self.relation.data[self.relation.app].get("token")
+        return self.relation.data[self.relation.app].get("token", "")
 
     @property
     def address(self):
-        return self.relation.data[self.relation.app].get("address")
+        return self.relation.data[self.relation.app].get("address", "")
 
     @property
     def scheme(self):
-        return self.relation.data[self.relation.app].get("scheme")
+        return self.relation.data[self.relation.app].get("scheme", "")
 
     @property
     def port(self):
-        return self.relation.data[self.relation.app].get("port")
+        return self.relation.data[self.relation.app].get("port", "")
 
 
 class OpenFGAStoreCreateEvent(OpenFGAEvent):