diff --git a/Escc.EastSussexGovUK.Umbraco.Web.Tests/packages.config b/Escc.EastSussexGovUK.Umbraco.Web.Tests/packages.config
index 2caf917b..e5d0a2b5 100644
--- a/Escc.EastSussexGovUK.Umbraco.Web.Tests/packages.config
+++ b/Escc.EastSussexGovUK.Umbraco.Web.Tests/packages.config
@@ -59,7 +59,7 @@
   <package id="System.Numerics.Vectors" version="4.4.0" targetFramework="net472" />
   <package id="System.Runtime.Caching" version="4.5.0" targetFramework="net472" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.1" targetFramework="net472" />
-  <package id="System.Text.Encodings.Web" version="4.5.0" targetFramework="net472" />
+  <package id="System.Text.Encodings.Web" version="4.5.1" targetFramework="net472" />
   <package id="System.Threading.Tasks.Dataflow" version="4.7.0" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net472" />