diff --git a/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj b/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
index 07f2e3e7d..8bdebc507 100644
--- a/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
+++ b/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
@@ -45,7 +45,7 @@
     <!--STJ
     required until Microsoft.Extensions.Logging.Console and Microsoft.Extensions.Configuration.Json
     update their dependencies -->
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Microsoft.OpenApi.Readers/Microsoft.OpenApi.Readers.csproj b/src/Microsoft.OpenApi.Readers/Microsoft.OpenApi.Readers.csproj
index cdd32b997..8ad99192a 100644
--- a/src/Microsoft.OpenApi.Readers/Microsoft.OpenApi.Readers.csproj
+++ b/src/Microsoft.OpenApi.Readers/Microsoft.OpenApi.Readers.csproj
@@ -31,7 +31,7 @@
         </PackageReference>
 
         <PackageReference Include="SharpYaml" Version="2.1.1" />
-        <PackageReference Include="System.Text.Json" Version="8.0.5" />
+        <PackageReference Include="System.Text.Json" Version="9.0.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/Microsoft.OpenApi/Microsoft.OpenApi.csproj b/src/Microsoft.OpenApi/Microsoft.OpenApi.csproj
index b549decd7..7113d0a10 100644
--- a/src/Microsoft.OpenApi/Microsoft.OpenApi.csproj
+++ b/src/Microsoft.OpenApi/Microsoft.OpenApi.csproj
@@ -22,7 +22,7 @@
         <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
     </PropertyGroup>
     <ItemGroup>        
-        <PackageReference Include="System.Text.Json" Version="8.0.5" />
+        <PackageReference Include="System.Text.Json" Version="9.0.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj b/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj
index 91660802a..daf6dbd1c 100644
--- a/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj
+++ b/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj
@@ -24,7 +24,7 @@
         <PackageReference Include="xunit" Version="2.9.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="all" />
         <!--STJ required until Microsoft.Extensions.Logging.Console and Microsoft.Extensions.Configuration.Json update their dependencies -->
-        <PackageReference Include="System.Text.Json" Version="8.0.5" />
+        <PackageReference Include="System.Text.Json" Version="9.0.0" />
     </ItemGroup>
 
     <ItemGroup>