diff --git a/spec b/spec
index b58c3b4e..8c4d67b5 160000
--- a/spec
+++ b/spec
@@ -1 +1 @@
-Subproject commit b58c3b4ec68b0db73e6c33ed4a30e94b1ede5e85
+Subproject commit 8c4d67b550fe865dffb1e10b311aa91ee3689934
diff --git a/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj b/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj
index aa9e9868..02b35230 100644
--- a/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj
+++ b/src/OpenFeature.Contrib.Providers.Flagsmith/OpenFeature.Contrib.Providers.Flagsmith.csproj
@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard20</TargetFrameworks>
     <PackageId>OpenFeature.Contrib.Providers.Flagsmith</PackageId>
     <VersionNumber>0.1.6</VersionNumber> <!--x-release-please-version -->
     <VersionPrefix>$(VersionNumber)</VersionPrefix>
@@ -20,6 +19,9 @@
 
   <ItemGroup>
     <PackageReference Include="Flagsmith" Version="5.3.0" />
+  </ItemGroup>
+
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net462' or '$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'net5.0'">
     <PackageReference Include="System.Text.Json" Version="8.0.3" />
   </ItemGroup>
 
diff --git a/src/OpenFeature.Contrib.Providers.GOFeatureFlag/OpenFeature.Contrib.Providers.GOFeatureFlag.csproj b/src/OpenFeature.Contrib.Providers.GOFeatureFlag/OpenFeature.Contrib.Providers.GOFeatureFlag.csproj
index 5cabdd99..c3764561 100644
--- a/src/OpenFeature.Contrib.Providers.GOFeatureFlag/OpenFeature.Contrib.Providers.GOFeatureFlag.csproj
+++ b/src/OpenFeature.Contrib.Providers.GOFeatureFlag/OpenFeature.Contrib.Providers.GOFeatureFlag.csproj
@@ -10,8 +10,8 @@
     <Authors>Thomas Poignant</Authors>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="8.0.3" />
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net462' or '$(TargetFramework)' == 'netstandard2.0'">
+	<PackageReference Include="System.Text.Json" Version="8.0.3" />
   </ItemGroup>
 
   <PropertyGroup>