diff --git a/Directory.Packages.props b/Directory.Packages.props
index 4dca7d883..9c04a3c77 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -26,6 +26,7 @@
     <PackageVersion Include="System.Collections.Immutable" Version="7.0.0" />
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />
     <PackageVersion Include="System.Security.Cryptography.Algorithms" Version="4.3.1" />
+    <PackageVersion Include="System.Text.Json" Version="9.0.0" />
     <PackageVersion Include="System.Xml.ReaderWriter" Version="4.3.1" />
     <PackageVersion Include="System.ValueTuple" Version="4.5.0" />
     <PackageVersion Include="xunit" Version="2.9.2" />
diff --git a/Open-XML-SDK.sln b/Open-XML-SDK.sln
index 61068bfa3..02d4adc64 100644
--- a/Open-XML-SDK.sln
+++ b/Open-XML-SDK.sln
@@ -213,13 +213,13 @@ Global
 		{E04F2FB4-DBC6-46DC-857C-F0E89B42F385} = {3653266D-2C88-4487-8977-839CB3E78A0A}
 		{BAC36A8F-AA8E-4097-B2BA-2EFE559BEE62} = {0782A132-968D-4BDD-911A-2C3074EAF886}
 		{C5AE39F0-A152-471A-B90E-B8F4E94AA6C2} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
-		{DE06FC2B-EABB-4535-BC73-C51A32B5AC01} = {C5AE39F0-A152-471A-B90E-B8F4E94AA6C2}
-		{890B74DD-6316-4D56-B42A-5D66F10F88C6} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
+		{DE06FC2B-EABB-4535-BC73-C51A32B5AC01} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
+		{890B74DD-6316-4D56-B42A-5D66F10F88C6} = {C5AE39F0-A152-471A-B90E-B8F4E94AA6C2}
 		{5DE9FB8F-A7C2-4038-A4A8-1622CDB6821A} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
 		{F48B7D50-16CB-4BEF-A614-2DED9960AF09} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
-		{C91489AB-FF14-4FAD-BA51-35371ADD7E1C} = {3653266D-2C88-4487-8977-839CB3E78A0A}
-		{BB5DF535-E849-42AC-852A-A6D4815347C0} = {A4DF60EB-3AA5-48F0-B4D2-3F94B8E62F03}
-		{5241BCF2-331D-428E-A9C4-F8DF92C8F726} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
+		{C91489AB-FF14-4FAD-BA51-35371ADD7E1C} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
+		{BB5DF535-E849-42AC-852A-A6D4815347C0} = {3653266D-2C88-4487-8977-839CB3E78A0A}
+		{5241BCF2-331D-428E-A9C4-F8DF92C8F726} = {A4DF60EB-3AA5-48F0-B4D2-3F94B8E62F03}
 		{3ECC7570-3501-479D-9CD9-64799C2AD149} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
 		{BADAC0CC-F3E6-440E-B322-DA2B97625F26} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
 		{8EE9F34E-EAA1-4F03-B388-8076CE44DD7B} = {7DAF7304-40CC-4180-88A5-9A89DD13C565}
diff --git a/test/DocumentFormat.OpenXml.Generator.Tests/DocumentFormat.OpenXml.Generator.Tests.csproj b/test/DocumentFormat.OpenXml.Generator.Tests/DocumentFormat.OpenXml.Generator.Tests.csproj
index 229ab8813..cb683281c 100644
--- a/test/DocumentFormat.OpenXml.Generator.Tests/DocumentFormat.OpenXml.Generator.Tests.csproj
+++ b/test/DocumentFormat.OpenXml.Generator.Tests/DocumentFormat.OpenXml.Generator.Tests.csproj
@@ -10,6 +10,7 @@
     <PackageReference Include="NuGet.Packaging" />
     <PackageReference Include="NuGet.Protocol" />
     <PackageReference Include="NuGet.Resolver" />
+    <PackageReference Include="System.Text.Json" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\gen\DocumentFormat.OpenXml.Generator\DocumentFormat.OpenXml.Generator.csproj" />