diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 5364f55..850beb8 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -7,6 +7,7 @@ explicitly configured.
 
 ## Upgrading
 
+* Update assets client to v0.3.0.
 
 ## New Features
 
diff --git a/pyproject.toml b/pyproject.toml
index 637c9c7..8f6b62c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
   "asyncclick >= 8.3.0.4, < 9",
   "typing-extensions >= 4.14.1, < 5",
   "frequenz-microgrid-component-graph >= 0.3.4, < 0.4",
-  "frequenz-client-assets >= 0.2.0, < 0.3",
+  "frequenz-client-assets >= 0.3.0, < 0.4",
 ]
 dynamic = ["version"]
 
diff --git a/src/frequenz/gridpool/_graph_generator.py b/src/frequenz/gridpool/_graph_generator.py
index 69db5f2..b309ee3 100644
--- a/src/frequenz/gridpool/_graph_generator.py
+++ b/src/frequenz/gridpool/_graph_generator.py
@@ -3,8 +3,6 @@
 
 """Formula generation from assets API component/connection configurations."""
 
-from typing import cast
-
 from frequenz.client.assets import AssetsApiClient
 from frequenz.client.assets.electrical_component import (
     ComponentConnection,
@@ -61,6 +59,6 @@ async def get_component_graph(
 
         graph = ComponentGraph[
             ElectricalComponent, ComponentConnection, ElectricalComponentId
-        ](components, cast(list[ComponentConnection], connections))
+        ](components, connections)
 
         return graph