diff --git a/src/aggregator-function/aggregator-function.csproj b/src/aggregator-function/aggregator-function.csproj
index 71fdb301..bb6f6d1b 100644
--- a/src/aggregator-function/aggregator-function.csproj
+++ b/src/aggregator-function/aggregator-function.csproj
@@ -32,7 +32,7 @@
   </ItemGroup>
   <ItemGroup>
     <!-- resolves MSB3277 -->
-    <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    <PackageReference Include="System.Text.Json" Version="5.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.WebApiCompatShim" Version="2.2.0" />
     <PackageReference Include="Microsoft.Azure.WebJobs" Version="3.0.18" />
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="3.1.8" />
diff --git a/src/aggregator-host/aggregator-host.csproj b/src/aggregator-host/aggregator-host.csproj
index 2ee60c55..3d9a25d6 100644
--- a/src/aggregator-host/aggregator-host.csproj
+++ b/src/aggregator-host/aggregator-host.csproj
@@ -21,7 +21,7 @@
 
   <ItemGroup>
     <!-- resolves MSB3277 -->
-    <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    <PackageReference Include="System.Text.Json" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="3.1.8" />
   </ItemGroup>
   
diff --git a/src/unittests-function/unittests-function.csproj b/src/unittests-function/unittests-function.csproj
index 3cc7101c..52a0d200 100644
--- a/src/unittests-function/unittests-function.csproj
+++ b/src/unittests-function/unittests-function.csproj
@@ -22,7 +22,7 @@
 
   <ItemGroup>
     <!-- resolves MSB3277 -->
-    <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    <PackageReference Include="System.Text.Json" Version="5.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.2.0" />
     <PackageReference Include="NSubstitute" Version="4.2.2" />