diff --git a/src/WireMock.Net.Abstractions/WireMock.Net.Abstractions.csproj b/src/WireMock.Net.Abstractions/WireMock.Net.Abstractions.csproj
index 59af0817..dd7c8c8f 100644
--- a/src/WireMock.Net.Abstractions/WireMock.Net.Abstractions.csproj
+++ b/src/WireMock.Net.Abstractions/WireMock.Net.Abstractions.csproj
@@ -51,11 +51,5 @@
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
     </ItemGroup>
-    <!--<ItemGroup Condition="'$(TargetFramework)' == 'net45'">
-        <PackageReference Include="Nullable" Version="1.2.1">
-            <PrivateAssets>all</PrivateAssets>
-            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-        </PackageReference>
-    </ItemGroup>-->
 
 </Project>
\ No newline at end of file
diff --git a/src/WireMock.Net/WireMock.Net.csproj b/src/WireMock.Net/WireMock.Net.csproj
index c21c3bd1..f85dc999 100644
--- a/src/WireMock.Net/WireMock.Net.csproj
+++ b/src/WireMock.Net/WireMock.Net.csproj
@@ -59,7 +59,6 @@
         <PackageReference Include="NJsonSchema.Extensions" Version="0.1.0" />
         <PackageReference Include="NSwag.Core" Version="13.16.1" />
         <PackageReference Include="SimMetrics.Net" Version="1.0.5" />
-        <!--<PackageReference Include="Stef.Validation" Version="0.1.1" />-->
         <PackageReference Include="System.Linq.Dynamic.Core" Version="1.2.23" />
         <PackageReference Include="JmesPath.Net" Version="1.0.125" />
         <PackageReference Include="AnyOf" Version="0.3.0" />
@@ -100,13 +99,19 @@
         <PackageReference Include="System.Net.Http" Version="4.3.4" />
         <PackageReference Include="System.ValueTuple" Version="4.5.0" />
         <PackageReference Include="Scriban.Signed" Version="2.1.4" />
-        <PackageReference Include="Nullable" Version="1.3.0" />
+        <PackageReference Include="Nullable" Version="1.3.1">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'net461' ">
         <PackageReference Include="Scriban.Signed" Version="2.1.4" />
         <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
-        <PackageReference Include="Nullable" Version="1.3.0" />
+        <PackageReference Include="Nullable" Version="1.3.1">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
 
         <!-- https://github.com/WireMock-Net/WireMock.Net/issues/697 -->
         <PackageReference Include="System.Text.Encodings.Web" Version="4.7.2" />
@@ -123,13 +128,19 @@
         <PackageReference Include="System.Xml.XPath.XmlDocument" Version="4.3.0" />
         <PackageReference Include="System.ValueTuple" Version="4.5.0" />
         <PackageReference Include="Scriban.Signed" Version="2.1.4" />
-        <PackageReference Include="Nullable" Version="1.3.0" />
+        <PackageReference Include="Nullable" Version="1.3.1">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'netstandard2.1' ">
         <PackageReference Include="Scriban.Signed" Version="5.5.0" />
         <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
-        <PackageReference Include="Nullable" Version="1.3.0" />
+        <PackageReference Include="Nullable" Version="1.3.1">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
 
         <!-- https://github.com/WireMock-Net/WireMock.Net/issues/507 -->
         <PackageReference Include="Microsoft.AspNetCore.Server.IIS" Version="2.2.6" />
@@ -141,7 +152,10 @@
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
-        <PackageReference Include="Nullable" Version="1.3.0" />
+        <PackageReference Include="Nullable" Version="1.3.1">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
     </ItemGroup>
 
     <ItemGroup>