diff --git a/src/FSharp.Data.Csv.Core/FSharp.Data.Csv.Core.fsproj b/src/FSharp.Data.Csv.Core/FSharp.Data.Csv.Core.fsproj
index eea7b85df..ad9c37329 100644
--- a/src/FSharp.Data.Csv.Core/FSharp.Data.Csv.Core.fsproj
+++ b/src/FSharp.Data.Csv.Core/FSharp.Data.Csv.Core.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="CsvRuntime.fs" />
diff --git a/src/FSharp.Data.Html.Core/FSharp.Data.Html.Core.fsproj b/src/FSharp.Data.Html.Core/FSharp.Data.Html.Core.fsproj
index 5820befb6..52fbf4581 100644
--- a/src/FSharp.Data.Html.Core/FSharp.Data.Html.Core.fsproj
+++ b/src/FSharp.Data.Html.Core/FSharp.Data.Html.Core.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
     <DefineConstants>$(DefineConstants);HIDE_REPRESENTATION</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/FSharp.Data.Http/FSharp.Data.Http.fsproj b/src/FSharp.Data.Http/FSharp.Data.Http.fsproj
index 5d0c13d80..4d90e0350 100644
--- a/src/FSharp.Data.Http/FSharp.Data.Http.fsproj
+++ b/src/FSharp.Data.Http/FSharp.Data.Http.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Http.fs" />
diff --git a/src/FSharp.Data.Json.Core/FSharp.Data.Json.Core.fsproj b/src/FSharp.Data.Json.Core/FSharp.Data.Json.Core.fsproj
index 1172905b8..f58ffbaca 100644
--- a/src/FSharp.Data.Json.Core/FSharp.Data.Json.Core.fsproj
+++ b/src/FSharp.Data.Json.Core/FSharp.Data.Json.Core.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="JsonValue.fs" />
diff --git a/src/FSharp.Data.Runtime.Utilities/FSharp.Data.Runtime.Utilities.fsproj b/src/FSharp.Data.Runtime.Utilities/FSharp.Data.Runtime.Utilities.fsproj
index f1b5fa927..024026827 100644
--- a/src/FSharp.Data.Runtime.Utilities/FSharp.Data.Runtime.Utilities.fsproj
+++ b/src/FSharp.Data.Runtime.Utilities/FSharp.Data.Runtime.Utilities.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="PublicApi.fs" />
diff --git a/src/FSharp.Data.WorldBank.Core/FSharp.Data.WorldBank.Core.fsproj b/src/FSharp.Data.WorldBank.Core/FSharp.Data.WorldBank.Core.fsproj
index 6401f6300..2ec6f9af5 100644
--- a/src/FSharp.Data.WorldBank.Core/FSharp.Data.WorldBank.Core.fsproj
+++ b/src/FSharp.Data.WorldBank.Core/FSharp.Data.WorldBank.Core.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="WorldBankRuntime.fs" />
diff --git a/src/FSharp.Data.Xml.Core/FSharp.Data.Xml.Core.fsproj b/src/FSharp.Data.Xml.Core/FSharp.Data.Xml.Core.fsproj
index be69e732b..06050feab 100644
--- a/src/FSharp.Data.Xml.Core/FSharp.Data.Xml.Core.fsproj
+++ b/src/FSharp.Data.Xml.Core/FSharp.Data.Xml.Core.fsproj
@@ -9,7 +9,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <!-- always have tailcalls on for design time compiler add-in to allow repo to compile in DEBUG, see https://github.com/fsprojects/FSharp.Data/issues/1410 -->
     <Tailcalls>true</Tailcalls>
-    <IsTrimmable>true</IsTrimmable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="XmlRuntime.fs" />