diff --git a/README.md b/README.md
index 2e5273d..dff0e39 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Alternatively, add the following line to your `.csproj` file.
 
 ```text
   <ItemGroup>
-    <PackageReference Include="Mscc.GenerativeAI" Version="1.8.1" />
+    <PackageReference Include="Mscc.GenerativeAI" Version="1.8.3" />
   </ItemGroup>
 ```
 
@@ -147,7 +147,7 @@ var prompt = "Write a story about a magic backpack.";
 
 var model = new GenerativeModel(apiKey: apiKey, model: Model.GeminiPro);
 
-var response = model.GenerateContent(prompt).Result;
+var response = await model.GenerateContent(prompt);
 Console.WriteLine(response.Text);
 ```
 
@@ -167,7 +167,7 @@ var vertex = new VertexAI(projectId: projectId, region: region);
 var model = vertex.GenerativeModel(model: Model.Gemini15Pro);
 model.AccessToken = accessToken;
 
-var response = model.GenerateContent(prompt).Result;
+var response = await model.GenerateContent(prompt);
 Console.WriteLine(response.Text);
 ```
 
@@ -187,6 +187,9 @@ var prompt = "Good morning! How are you?";
 IGenerativeAI genAi = new GoogleAI(apiKey);
 var model = genAi.GenerativeModel(Model.Gemini15ProLatest, systemInstruction: systemInstruction);
 var request = new GenerateContentRequest(prompt);
+
+var response = await model.GenerateContent(prompt);
+Console.WriteLine(response.Text);
 ```
 
 The response might look similar to this:
@@ -196,6 +199,20 @@ Shimmer me timbers, it's good to see a friendly face!
 What brings ye to these here waters?
 ```
 
+### Grounding with Google Search
+
+```csharp
+var apiKey = "your_api_key";
+var prompt = "Who won Wimbledon this year?";
+IGenerativeAI genAi = new GoogleAI(apiKey);
+var model = genAi.GenerativeModel("gemini-1.5-pro-002",
+    tools: [new Tool { GoogleSearchRetrieval = 
+        new(DynamicRetrievalConfigMode.ModeUnspecified, 0.06f) }]);
+
+var response = await model.GenerateContent(prompt);
+Console.WriteLine(response.Text);
+```
+
 ### Text-and-image input
 
 ```csharp
diff --git a/VERSION b/VERSION
index 0bfbd57..fe4e75f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.8.2
\ No newline at end of file
+1.8.3
\ No newline at end of file
diff --git a/src/Mscc.GenerativeAI/CHANGELOG.md b/src/Mscc.GenerativeAI/CHANGELOG.md
index 28333fe..372876f 100644
--- a/src/Mscc.GenerativeAI/CHANGELOG.md
+++ b/src/Mscc.GenerativeAI/CHANGELOG.md
@@ -15,6 +15,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 ### Fixed
 
+## 1.8.3
+
+### Added 
+
+- add Grounding with Google Search
+- add `ModelVersion` property
+
 ## 1.8.2
 
 ### Added