diff --git a/src/IBM.Watson.TextToSpeech.v1/IBM.Watson.TextToSpeech.v1.csproj b/src/IBM.Watson.TextToSpeech.v1/IBM.Watson.TextToSpeech.v1.csproj
index 4b262a433..74cf0c4f1 100644
--- a/src/IBM.Watson.TextToSpeech.v1/IBM.Watson.TextToSpeech.v1.csproj
+++ b/src/IBM.Watson.TextToSpeech.v1/IBM.Watson.TextToSpeech.v1.csproj
@@ -36,7 +36,7 @@
     <ItemGroup>
         <PackageReference Include="IBM.Watson.Common" Version="6.1.0" />
         <PackageReference Include="IBM.Cloud.SDK.Core" Version="1.3.1" />
-        <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
         <PackageReference Include="JsonSubTypes" Version="1.6.0" />
     </ItemGroup>
 
diff --git a/src/IBM.Watson.TextToSpeech.v1/Test/Integration/IBM.Watson.TextToSpeech.v1.IntegrationTests.csproj b/src/IBM.Watson.TextToSpeech.v1/Test/Integration/IBM.Watson.TextToSpeech.v1.IntegrationTests.csproj
index 85b7cebef..24048c888 100644
--- a/src/IBM.Watson.TextToSpeech.v1/Test/Integration/IBM.Watson.TextToSpeech.v1.IntegrationTests.csproj
+++ b/src/IBM.Watson.TextToSpeech.v1/Test/Integration/IBM.Watson.TextToSpeech.v1.IntegrationTests.csproj
@@ -39,7 +39,7 @@
     <PackageReference Include="MSTest.TestAdapter" Version="1.1.8-rc" />
     <PackageReference Include="MSTest.TestFramework" Version="1.0.8-rc" />
     <PackageReference Include="NSubstitute" Version="4.2.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="1.0.2" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.0.2" />
     <PackageReference Include="OpenCover" Version="4.7.922" />