diff --git a/CallfireApiClient.nuspec b/CallfireApiClient.nuspec
index e15086d..b2d8831 100644
--- a/CallfireApiClient.nuspec
+++ b/CallfireApiClient.nuspec
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?><package>
   <metadata>
     <id>CallfireApiClient</id>
-    <version>1.1.19</version>
+    <version>1.1.2</version>
     <title>CallFire API v2 client</title>
     <authors>
       Vladimir Mikhailov
@@ -15,6 +15,9 @@
     <description>C# client library for integration with Callfire REST API v2 services</description>
     <releaseNotes>Callfire API client Changelog
 =============================
+Version 1.1.2 - August 1 2018
+    - updated .NET framework target version to latest for support TLS 1.2 by default
+
 Version 1.1.19 - Jun 13 2017
 - added fromNumber to Recipient object for sending calls/texts
 - added strictValidation flag for adding contacts to broadcast 
diff --git a/Changelog.txt b/Changelog.txt
index c62c748..6282869 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -1,5 +1,8 @@
 Callfire API client Changelog
 =============================
+Version 1.1.2 - August 1 2018
+    - updated .NET framework target version to latest for support TLS 1.2 by default
+
 Version 1.1.19 - Jun 13 2017
 - added fromNumber to Recipient object for sending calls/texts
 - added strictValidation flag for adding contacts to broadcast 
diff --git a/build.gradle b/build.gradle
index 12d322d..a2aa6d4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ import groovy.xml.XmlUtil
 import groovy.xml.StreamingMarkupBuilder
 
 plugins {
-  id 'com.ullink.msbuild' version '2.16'
+  id 'com.ullink.msbuild' version '2.21'
   id 'com.ullink.nuget' version '2.15'
   id 'com.ullink.nunit' version '1.10'
   id 'com.ullink.opencover' version '1.7'
@@ -26,7 +26,7 @@ ext['assemblyInfo'] = "src/CallfireApiClient/Properties/AssemblyInfo.cs"
 defaultTasks('nugetPack')
 
 nuget {
-    version = '4.1.0'
+    version = '4.4.0'
 }
 
 msbuild.dependsOn nugetRestore
diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755
diff --git a/src/CallfireApiClient.IntegrationTests/CallfireApiClient.IntegrationTests.csproj b/src/CallfireApiClient.IntegrationTests/CallfireApiClient.IntegrationTests.csproj
index 7ad47ca..8fa0f3e 100644
--- a/src/CallfireApiClient.IntegrationTests/CallfireApiClient.IntegrationTests.csproj
+++ b/src/CallfireApiClient.IntegrationTests/CallfireApiClient.IntegrationTests.csproj
@@ -9,7 +9,7 @@
     <AssemblyName>IntegrationTests</AssemblyName>
     <UseMSBuildEngine>True</UseMSBuildEngine>
     <ReleaseVersion>1.0.0</ReleaseVersion>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.1</TargetFrameworkVersion>
     <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
diff --git a/src/CallfireApiClient.Tests/CallfireApiClient.Tests.csproj b/src/CallfireApiClient.Tests/CallfireApiClient.Tests.csproj
index 756c423..1d1b3b1 100644
--- a/src/CallfireApiClient.Tests/CallfireApiClient.Tests.csproj
+++ b/src/CallfireApiClient.Tests/CallfireApiClient.Tests.csproj
@@ -8,7 +8,7 @@
     <RootNamespace>CallfireApiClient.Tests</RootNamespace>
     <AssemblyName>callfire-api-client-tests</AssemblyName>
     <ReleaseVersion>1.0.0</ReleaseVersion>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.1</TargetFrameworkVersion>
     <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
diff --git a/src/CallfireApiClient/CallfireApiClient.csproj b/src/CallfireApiClient/CallfireApiClient.csproj
index 49ff27d..748741f 100644
--- a/src/CallfireApiClient/CallfireApiClient.csproj
+++ b/src/CallfireApiClient/CallfireApiClient.csproj
@@ -9,7 +9,7 @@
     <AssemblyName>callfire-api-client</AssemblyName>
     <ReleaseVersion>1.0.0</ReleaseVersion>
     <CodePage>65001</CodePage>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.1</TargetFrameworkVersion>
     <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
diff --git a/src/CallfireApiClient/Properties/AssemblyInfo.cs b/src/CallfireApiClient/Properties/AssemblyInfo.cs
index b60a352..149e256 100644
--- a/src/CallfireApiClient/Properties/AssemblyInfo.cs
+++ b/src/CallfireApiClient/Properties/AssemblyInfo.cs
@@ -13,7 +13,7 @@
 // The form "{Major}.{Minor}.*" will automatically update the build and revision,
 // and "{Major}.{Minor}.{Build}.*" will update just the revision.
 
-[assembly: AssemblyVersion("1.1.19.*")]
+[assembly: AssemblyVersion("1.1.2.*")]
 
 // The following attributes are used to specify the signing key for the assembly,
 // if desired. See the Mono documentation for more information about signing.