diff --git a/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj b/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj
index a463261a..b72156ed 100644
--- a/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj
+++ b/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj
@@ -29,6 +29,6 @@
       We require F# Core >= 5 due to string interpolation.
       AND: We have this in all library projects; NOT in the test projects.
     -->
-    <PackageReference Include="FSharp.Core" Version="5.0.2" />
+    <PackageReference Include="FSharp.Core" Version="8.0.200" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/FsHttp.NewtonsoftJson/FsHttp.NewtonsoftJson.fsproj b/src/FsHttp.NewtonsoftJson/FsHttp.NewtonsoftJson.fsproj
index af0bd4ea..a65db378 100644
--- a/src/FsHttp.NewtonsoftJson/FsHttp.NewtonsoftJson.fsproj
+++ b/src/FsHttp.NewtonsoftJson/FsHttp.NewtonsoftJson.fsproj
@@ -29,6 +29,6 @@
       We require F# Core >= 5 due to string interpolation.
       AND: We have this in all library projects; NOT in the test projects.
     -->
-    <PackageReference Include="FSharp.Core" Version="5.0.2" />
+    <PackageReference Include="FSharp.Core" Version="8.0.200" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/FsHttp/FsHttp.fsproj b/src/FsHttp/FsHttp.fsproj
index bbccacc1..a7b458ca 100644
--- a/src/FsHttp/FsHttp.fsproj
+++ b/src/FsHttp/FsHttp.fsproj
@@ -40,6 +40,6 @@
       We require F# Core >= 5 due to string interpolation.
       AND: We have this in all library projects; NOT in the test projects.
     -->
-    <PackageReference Include="FSharp.Core" Version="5.0.2" />
+    <PackageReference Include="FSharp.Core" Version="8.0.200" />
   </ItemGroup>
 </Project>
\ No newline at end of file