diff --git a/README.md b/README.md
index ef2c5f2..1ed934b 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,7 @@ _Right click 'Save link as...' since GitHub doesn't respect url encoding, but ma
 - [SI-Snitch for Sitecore-10.1.1](./Sitecore%20Packages/SI-Snitch%20for%20Sitecore-10.1.1.zip) ( Sitecore 10.1.1)
 - [SI-Snitch for Sitecore-10.1.2](./Sitecore%20Packages/SI-Snitch%20for%20Sitecore-10.1.2.zip) ( Sitecore 10.1.2)
 - [SI-Snitch for Sitecore-10.2](./Sitecore%20Packages/SI-Snitch%20for%20Sitecore-10.2.zip) ( Sitecore 10.2)
+- [SI-Snitch for Sitecore-10.3](./Sitecore%20Packages/SI-Snitch%20for%20Sitecore-10.3.zip) ( Sitecore 10.3)
 
 The above package can be installed through the normal Sitecore Installation Wizard.
 
@@ -44,7 +45,7 @@ The following would be an output of SI Snitch in the Sitecore log file:
 
 - 32856 09:01:15 INFO oO SI Snitch Oo -- Claim: nbf || Value: 1604563275
 - 32856 09:01:15 INFO oO SI Snitch Oo -- Claim: exp || Value: 1604564775
-- 32856 09:01:15 INFO oO SI Snitch Oo -- Claim: iss || Value: https://sc10_2_0.identityserver.dev.local
+- 32856 09:01:15 INFO oO SI Snitch Oo -- Claim: iss || Value: https://sc10_3.identityserver.dev.local
 - 32856 09:01:15 INFO oO SI Snitch Oo -- Claim: aud || Value: Sitecore
 - 32856 09:01:15 INFO oO SI Snitch Oo -- Claim: iat || Value: 1604563275
 
@@ -64,6 +65,6 @@ _Originally developed by:_
 
 Derek Correia - Twitter: [@derekc](https://twitter.com/derekc), GitHub: https://github.com/derekcorreia
 
-_Upgraded + tested to support Sitecore 9.3, Sitecore 10.0.0, Sitecore 10.0.1, Sitecore 10.1.0 , Sitecore 10.1.1, Sitecore 10.1.2, Sitecore 10.2_
+_Upgraded + tested to support Sitecore 9.3, Sitecore 10.0.0, Sitecore 10.0.1, Sitecore 10.1.0 , Sitecore 10.1.1, Sitecore 10.1.2, Sitecore 10.2 & Sitecore 10.3_
 
 Robbert Hock - Twitter: [@kayeeNL](https://twitter.com/kayeenl), GitHub: https://github.com/KayeeNL
diff --git a/Sitecore Packages/SI-Snitch for Sitecore-10.3.zip b/Sitecore Packages/SI-Snitch for Sitecore-10.3.zip
new file mode 100644
index 0000000..eeeba66
Binary files /dev/null and b/Sitecore Packages/SI-Snitch for Sitecore-10.3.zip differ
diff --git a/SitecoreServices.SISnitch/SISnitch.cs b/SitecoreServices.SISnitch/SISnitch.cs
index 52d33d8..6bd0c39 100644
--- a/SitecoreServices.SISnitch/SISnitch.cs
+++ b/SitecoreServices.SISnitch/SISnitch.cs
@@ -9,7 +9,7 @@ public class Snitch : Transformation
     {
         public Snitch(BaseLog log)
         {
-            Assert.ArgumentNotNull(log, "log");
+            Assert.ArgumentNotNull(log, nameof(log));
             Log = log;
         }
 
@@ -17,6 +17,9 @@ public Snitch(BaseLog log)
 
         public override void Transform(ClaimsIdentity identity, TransformationContext context)
         {
+            Assert.ArgumentNotNull(identity, nameof(identity));
+            Assert.ArgumentNotNull(context, nameof(context));
+
             foreach (var c in identity.Claims) Log.Info($"oO SI Snitch Oo -- Claim: {c.Type} || Value: {c.Value}", this);
         }
     }