diff --git a/README.md b/README.md
index 2996ca6..35efcce 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,12 @@
 
 This is a Client SDK for RelationalAI
 
-- API version: 1.2.6
+- API version: 1.2.7
 
 ## Frameworks supported
 
 
-- .NET Core 3.1+
+- .NET Core 5.0+
 
 ## Dependencies
 
diff --git a/RelationalAI/Connection.cs b/RelationalAI/Connection.cs
index 1ff6f01..1fd9895 100644
--- a/RelationalAI/Connection.cs
+++ b/RelationalAI/Connection.cs
@@ -364,6 +364,12 @@ public bool EnableLibrary(string srcName)
             return Client.EnableLibrary(srcName);
         }
 
+        public bool CloseDatabase()
+        {
+            SetConnectionOnClients();
+            return Client.CloseDatabase();
+        }
+
         public ICollection<Relation> Cardinality(string relName = null)
         {
             SetConnectionOnClients();
diff --git a/RelationalAI/GeneratedRelationalAIClient.cs b/RelationalAI/GeneratedRelationalAIClient.cs
index b3b07f6..a6c2fd7 100644
--- a/RelationalAI/GeneratedRelationalAIClient.cs
+++ b/RelationalAI/GeneratedRelationalAIClient.cs
@@ -842,6 +842,9 @@ public System.Collections.Generic.IDictionary<string, object> AdditionalProperti
     [System.CodeDom.Compiler.GeneratedCode("NJsonSchema", "10.1.24.0 (Newtonsoft.Json v12.0.0.0)")]
     public partial class ModifyWorkspaceAction : Action
     {
+        [Newtonsoft.Json.JsonProperty("close_database", Required = Newtonsoft.Json.Required.Default, NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore)]
+        public string Close_database { get; set; }
+    
         [Newtonsoft.Json.JsonProperty("delete_edb", Required = Newtonsoft.Json.Required.Default, NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore)]
         public string Delete_edb { get; set; }
     
diff --git a/RelationalAI/KGMSClient.cs b/RelationalAI/KGMSClient.cs
index 782ef70..34a328a 100644
--- a/RelationalAI/KGMSClient.cs
+++ b/RelationalAI/KGMSClient.cs
@@ -21,7 +21,7 @@ public partial class GeneratedRelationalAIClient
 
         public const string JSON_CONTENT_TYPE = "application/json";
         public const string CSV_CONTENT_TYPE = "text/csv";
-        public const string USER_AGENT_HEADER = "KGMSClient/1.2.1/csharp";
+        public const string USER_AGENT_HEADER = "KGMSClient/1.2.7/csharp";
 
         public int DebugLevel = Connection.DEFAULT_DEBUG_LEVEL;
 
@@ -895,6 +895,13 @@ public bool EnableLibrary(string srcName)
             return RunAction(action) != null;
         }
 
+        public bool CloseDatabase()
+        {
+            var action = new ModifyWorkspaceAction();
+            action.Close_database = conn.DbName;
+            return RunAction(action, isReadOnly: true) != null;
+        }
+
         public ICollection<Relation> Cardinality(string relName = null)
         {
             var action = new CardinalityAction();
diff --git a/RelationalAI/RelationalAI.csproj b/RelationalAI/RelationalAI.csproj
index 7c29d44..daa75f2 100644
--- a/RelationalAI/RelationalAI.csproj
+++ b/RelationalAI/RelationalAI.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <Version>1.2.6</Version>
+    <Version>1.2.7</Version>
     <TargetFramework>net5.0</TargetFramework>
     <PackageId>RelationalAI</PackageId>
     <Authors>RelationalAI</Authors>
diff --git a/RelationalAISamples/LocalWorkflow.cs b/RelationalAISamples/LocalWorkflow.cs
index e77e09d..9c5ba09 100644
--- a/RelationalAISamples/LocalWorkflow.cs
+++ b/RelationalAISamples/LocalWorkflow.cs
@@ -56,6 +56,7 @@ def jaccard_similarity(a,b,v) = (count[x : tmp(a,b,x)] / count[x: (uedge(a, x) o
             );
 
             Console.WriteLine("==> Jaccard Similarity: " + JObject.FromObject(queryResult).ToString());
+            conn.CloseDatabase();
 
         }
     }
diff --git a/RelationalAITests/IntegrationTestsCommons.cs b/RelationalAITests/IntegrationTestsCommons.cs
index 88d423f..ab5164a 100644
--- a/RelationalAITests/IntegrationTestsCommons.cs
+++ b/RelationalAITests/IntegrationTestsCommons.cs
@@ -104,6 +104,12 @@ public static void RunAllTests(ConnFunc connFunc)
             conn.CreateDatabase(overwrite: true);
             Assert.True(conn.DeleteSource("stdlib"));
 
+            // close_database
+            // =============================================================================
+            conn = connFunc();
+            conn.CreateDatabase(overwrite: true);
+            Assert.True(conn.CloseDatabase());
+
             // list_source
             // =============================================================================
             conn = connFunc();
diff --git a/default.nix b/default.nix
index e901783..b43497f 100644
--- a/default.nix
+++ b/default.nix
@@ -9,7 +9,7 @@ let
 in
 stdenv.mkDerivation rec {
   name = "rai-server-csharp-client-sdk-${version}";
-  version = "1.2.6";
+  version = "1.2.7";
   buildInputs = [
     raiserverBinary
     dotnet-sdk_5