diff --git a/Directory.Build.props b/Directory.Build.props
index 6b5b231..f535aa8 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,8 +1,8 @@
 <Project>
 
   <PropertyGroup>
-    <VersionPrefix>2.28.0</VersionPrefix>
-    <PackageValidationBaselineVersion>2.27.1</PackageValidationBaselineVersion>
+    <VersionPrefix>2.28.1</VersionPrefix>
+    <PackageValidationBaselineVersion>2.28.0</PackageValidationBaselineVersion>
     <LangVersion>12.0</LangVersion>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index b8d0488..7f352ca 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,5 +1,9 @@
 # Release Notes
 
+## 2.28.1
+
+* Don't use `ToArray` unless needed for JSON source generation.
+
 ## 2.28.0
 
 * Support metadata-based source generation for `System.Text.Json` via `--json-source-gen` and `--json-source-gen-if`. It is optional because it significantly increases assembly size and slightly decreases performance. It may be worth considering for its [other benefits](https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/reflection-vs-source-generation).