diff --git a/src/Pose/Extensions/DictionaryExtensions.cs b/src/Pose/Extensions/DictionaryExtensions.cs
index 59f4756..9d973dc 100644
--- a/src/Pose/Extensions/DictionaryExtensions.cs
+++ b/src/Pose/Extensions/DictionaryExtensions.cs
@@ -6,6 +6,7 @@ internal static class DictionaryExtensions
     {
         public static bool TryAdd<TKey, TValue>(this Dictionary<TKey, TValue> dictionary, TKey key, TValue value)
         {
+#if NETSTANDARD2_0 || NET48
             try
             {
                 dictionary.Add(key, value);
@@ -15,6 +16,9 @@ public static bool TryAdd<TKey, TValue>(this Dictionary<TKey, TValue> dictionary
             {
                 return false;
             }
+#else
+            return dictionary.TryAdd(key, value);
+#endif
         }
     }
 }
\ No newline at end of file
diff --git a/src/Pose/Pose.csproj b/src/Pose/Pose.csproj
index c6085dd..fda9cc8 100644
--- a/src/Pose/Pose.csproj
+++ b/src/Pose/Pose.csproj
@@ -3,7 +3,7 @@
     <Title>Pose</Title>
     <Description>Replace any .NET method (including static and non-virtual) with a delegate</Description>
     <PackageVersion>1.2.1</PackageVersion>
-    <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netcoreapp3.0;net48</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>Pose</AssemblyName>
     <PackageId>Pose</PackageId>
diff --git a/test/Pose.Tests/Pose.Tests.csproj b/test/Pose.Tests/Pose.Tests.csproj
index 66b8c41..9877c69 100644
--- a/test/Pose.Tests/Pose.Tests.csproj
+++ b/test/Pose.Tests/Pose.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp2.0;netcoreapp3.0;netcoreapp2.1;netcoreapp3.1;net48</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.0;netcoreapp3.0;net47;net48</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>