diff --git a/src/Hl7.Fhir.Specification.R4.Tests/Hl7.Fhir.Specification.R4.Tests.csproj b/src/Hl7.Fhir.Specification.R4.Tests/Hl7.Fhir.Specification.R4.Tests.csproj
index f2e3c2eb7f..acf90bfff4 100644
--- a/src/Hl7.Fhir.Specification.R4.Tests/Hl7.Fhir.Specification.R4.Tests.csproj
+++ b/src/Hl7.Fhir.Specification.R4.Tests/Hl7.Fhir.Specification.R4.Tests.csproj
@@ -16,7 +16,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.3" />
+		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.4" />
 	</ItemGroup>
 
 	<ItemGroup>
diff --git a/src/Hl7.Fhir.Specification.R4B.Tests/Hl7.Fhir.Specification.R4B.Tests.csproj b/src/Hl7.Fhir.Specification.R4B.Tests/Hl7.Fhir.Specification.R4B.Tests.csproj
index 1c60404724..55adec3c83 100644
--- a/src/Hl7.Fhir.Specification.R4B.Tests/Hl7.Fhir.Specification.R4B.Tests.csproj
+++ b/src/Hl7.Fhir.Specification.R4B.Tests/Hl7.Fhir.Specification.R4B.Tests.csproj
@@ -16,7 +16,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.3" />
+		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.4" />
 	</ItemGroup>
 
 	<ItemGroup>
diff --git a/src/Hl7.Fhir.Specification.R5.Tests/Hl7.Fhir.Specification.R5.Tests.csproj b/src/Hl7.Fhir.Specification.R5.Tests/Hl7.Fhir.Specification.R5.Tests.csproj
index 088d991c3e..63c3be41e7 100644
--- a/src/Hl7.Fhir.Specification.R5.Tests/Hl7.Fhir.Specification.R5.Tests.csproj
+++ b/src/Hl7.Fhir.Specification.R5.Tests/Hl7.Fhir.Specification.R5.Tests.csproj
@@ -21,7 +21,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.3" />
+		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.4" />
 	</ItemGroup>
 
 	<ItemGroup>
diff --git a/src/Hl7.Fhir.Support.Tests/Hl7.Fhir.Support.Tests.csproj b/src/Hl7.Fhir.Support.Tests/Hl7.Fhir.Support.Tests.csproj
index 0aa9e448a7..25673d59ef 100644
--- a/src/Hl7.Fhir.Support.Tests/Hl7.Fhir.Support.Tests.csproj
+++ b/src/Hl7.Fhir.Support.Tests/Hl7.Fhir.Support.Tests.csproj
@@ -8,7 +8,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.3" />
+		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.4" />
 	</ItemGroup>
 	
 	<ItemGroup>
diff --git a/src/Hl7.FhirPath.R4.Tests/Hl7.FhirPath.R4.Tests.csproj b/src/Hl7.FhirPath.R4.Tests/Hl7.FhirPath.R4.Tests.csproj
index 26ac26bca3..164de93fb4 100644
--- a/src/Hl7.FhirPath.R4.Tests/Hl7.FhirPath.R4.Tests.csproj
+++ b/src/Hl7.FhirPath.R4.Tests/Hl7.FhirPath.R4.Tests.csproj
@@ -21,7 +21,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.3" />
+		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.4" />
 	</ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/Hl7.FhirPath.Tests/HL7.FhirPath.Tests.csproj b/src/Hl7.FhirPath.Tests/HL7.FhirPath.Tests.csproj
index 03ace0d9e6..1abb561495 100644
--- a/src/Hl7.FhirPath.Tests/HL7.FhirPath.Tests.csproj
+++ b/src/Hl7.FhirPath.Tests/HL7.FhirPath.Tests.csproj
@@ -9,7 +9,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.3" />
+		<PackageReference Include="System.Threading.Tasks.Dataflow" Version="9.0.4" />
 	</ItemGroup>
 
 	<ItemGroup>