diff --git a/api-samples/dotnet/Google.Apis.YouTube.Samples.Playlists/packages.config b/api-samples/dotnet/Google.Apis.YouTube.Samples.Playlists/packages.config
index 6f5f18707..4f594a2c8 100644
--- a/api-samples/dotnet/Google.Apis.YouTube.Samples.Playlists/packages.config
+++ b/api-samples/dotnet/Google.Apis.YouTube.Samples.Playlists/packages.config
@@ -9,6 +9,6 @@
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
   <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.22" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="Zlib.Portable" version="1.10.0" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/api-samples/dotnet/Google.Apis.YouTube.Samples.Search/packages.config b/api-samples/dotnet/Google.Apis.YouTube.Samples.Search/packages.config
index 6f5f18707..4f594a2c8 100644
--- a/api-samples/dotnet/Google.Apis.YouTube.Samples.Search/packages.config
+++ b/api-samples/dotnet/Google.Apis.YouTube.Samples.Search/packages.config
@@ -9,6 +9,6 @@
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
   <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.22" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="Zlib.Portable" version="1.10.0" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/api-samples/dotnet/Google.Apis.YouTube.Samples.Upload/packages.config b/api-samples/dotnet/Google.Apis.YouTube.Samples.Upload/packages.config
index 6f5f18707..4f594a2c8 100644
--- a/api-samples/dotnet/Google.Apis.YouTube.Samples.Upload/packages.config
+++ b/api-samples/dotnet/Google.Apis.YouTube.Samples.Upload/packages.config
@@ -9,6 +9,6 @@
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
   <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.22" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="Zlib.Portable" version="1.10.0" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/api-samples/dotnet/packages.config b/api-samples/dotnet/packages.config
index bdb657a57..45f0082ba 100644
--- a/api-samples/dotnet/packages.config
+++ b/api-samples/dotnet/packages.config
@@ -9,6 +9,6 @@
   <package id="Microsoft.Bcl.Async" version="1.0.165" targetFramework="net40" />
   <package id="Microsoft.Bcl.Build" version="1.0.13" targetFramework="net40" />
   <package id="Microsoft.Net.Http" version="2.1.10" targetFramework="net40" />
-  <package id="Newtonsoft.Json" version="5.0.8" targetFramework="net40" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net40" />
   <package id="Zlib.Portable" version="1.9.2" targetFramework="net40" />
 </packages>
\ No newline at end of file