diff --git a/examples/AndroidSample/packages.config b/examples/AndroidSample/packages.config
index b7bca62ac..72a25cdcf 100644
--- a/examples/AndroidSample/packages.config
+++ b/examples/AndroidSample/packages.config
@@ -27,7 +27,7 @@
   <package id="System.Linq" version="4.3.0" targetFramework="monoandroid80" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="monoandroid80" />
   <package id="System.Net.Http" version="4.3.4" targetFramework="monoandroid60" />
-  <package id="System.Net.Primitives" version="4.3.0" targetFramework="monoandroid80" />
+  <package id="System.Net.Primitives" version="4.3.1" targetFramework="monoandroid80" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="monoandroid80" />
   <package id="System.Net.WebSockets.Client" version="4.3.1" targetFramework="monoandroid80" />
   <package id="System.ObjectModel" version="4.3.0" targetFramework="monoandroid80" />
diff --git a/src/IO.Ably.Android/packages.config b/src/IO.Ably.Android/packages.config
index 740d5f2d7..f9bfd2df8 100644
--- a/src/IO.Ably.Android/packages.config
+++ b/src/IO.Ably.Android/packages.config
@@ -29,7 +29,7 @@
   <package id="System.Linq" version="4.3.0" targetFramework="monoandroid403" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="monoandroid403" />
   <package id="System.Net.NameResolution" version="4.3.0" targetFramework="monoandroid403" />
-  <package id="System.Net.Primitives" version="4.3.0" targetFramework="monoandroid403" />
+  <package id="System.Net.Primitives" version="4.3.1" targetFramework="monoandroid403" />
   <package id="System.Net.Security" version="4.3.1" targetFramework="monoandroid403" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="monoandroid403" />
   <package id="System.Net.WebSockets.Client" version="4.3.1" targetFramework="monoandroid403" />
diff --git a/src/IO.Ably.iOS/packages.config b/src/IO.Ably.iOS/packages.config
index 765c8610b..64d556b5e 100644
--- a/src/IO.Ably.iOS/packages.config
+++ b/src/IO.Ably.iOS/packages.config
@@ -29,7 +29,7 @@
   <package id="System.Linq" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Net.NameResolution" version="4.3.0" targetFramework="xamarinios10" />
-  <package id="System.Net.Primitives" version="4.3.0" targetFramework="xamarinios10" />
+  <package id="System.Net.Primitives" version="4.3.1" targetFramework="xamarinios10" />
   <package id="System.Net.Security" version="4.3.2" targetFramework="xamarinios10" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Net.WebSockets.Client" version="4.3.1" targetFramework="xamarinios10" />