diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index e975eae7..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-language: csharp
-solution: Plivo.sln
-
-matrix:
-  include:
-    - dotnet: 2.1.300
-      mono: none
-      env: DOTNETCORE=2  # optional, can be used to take different code paths in your script
-    - dotnet: 1.1.5
-      mono: none
-      env: DOTNETCORE=1  # supporting GitVersioning package
-
-install:
-  - 'if [  ${DOTNETCORE} = 2 ]; then
-        dotnet restore;
-        dotnet build --framework netstandard2.0 src/Plivo/Plivo.csproj;
-        dotnet build --framework netcoreapp2.0 tests_netcore/Plivo.NetCore.Test/Plivo.NetCore.Test.csproj;
-    fi'
-  - 'if [  ${DOTNETCORE} = 1 ]; then
-        sudo apt-get install 2.1.300-rc1-008673;
-        dotnet restore;
-        dotnet build --framework netstandard1.3 src/Plivo/Plivo.csproj;
-        dotnet build --framework netcoreapp1.1 tests_netcore/Plivo.NetCore.Test/Plivo.NetCore.Test.csproj;
-    fi'
-
-script:
-  - 'if [  ${DOTNETCORE} = 2 ]; then
-        dotnet test --framework netcoreapp2.0 ./tests_netcore/Plivo.NetCore.Test/Plivo.NetCore.Test.csproj;
-    fi'
-  - 'if [  ${DOTNETCORE} = 1 ]; then
-        dotnet test --framework netcoreapp1.1  ./tests_netcore/Plivo.NetCore.Test/Plivo.NetCore.Test.csproj;
-    fi'
diff --git a/README.md b/README.md
index 5ca25cc6..ee84f40e 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,13 @@ You can install this SDK either by referencing the .dll file or using NuGet.
 Use the following line to install the latest SDK using the NuGet CLI.
 
 ```
-PM> Install-Package Plivo -Version 4.2.5
+PM> Install-Package Plivo -Version 5.7.4
 ```
 
 You can also use the .NET CLI to install this package as follows
 
 ```
-> dotnet add package Plivo --version 4.2.5
+> dotnet add package Plivo --version 5.7.4
 ```
 
 ## Getting started
diff --git a/src/Plivo/Plivo.nuspec b/src/Plivo/Plivo.nuspec
index a81602a2..ec415597 100755
--- a/src/Plivo/Plivo.nuspec
+++ b/src/Plivo/Plivo.nuspec
@@ -118,7 +118,7 @@
     <dependencies>
       <dependency id="Newtonsoft.Json" version="[10.0.1,)"/>
       <dependency id="System.Text.Encoding.Extensions" version="4.3.0" />
-      <dependency id="System.Net.Http" version="4.3.1"/>
+      <dependency id="System.Net.Http" version="4.3.4"/>
       <dependency id="System.IO.FileSystem" version="4.3.0" />
       <dependency id="JWT" version="6.1.4" />
     </dependencies>
diff --git a/tests/Plivo.Test/packages.config b/tests/Plivo.Test/packages.config
index 6ca421f8..7a3ea96d 100755
--- a/tests/Plivo.Test/packages.config
+++ b/tests/Plivo.Test/packages.config
@@ -11,7 +11,7 @@
   <package id="NUnit.Extension.VSProjectLoader" version="3.8.0" targetFramework="net461" />
   <package id="NUnit.Runners" version="3.9.0" targetFramework="net461" />
   <package id="NUnit3TestAdapter" version="3.11.2" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.4" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />