diff --git a/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj b/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj
index bedb13ee..f7bf63bd 100644
--- a/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj
+++ b/src/FsHttp.FSharpData/FsHttp.FSharpData.fsproj
@@ -22,6 +22,6 @@
   <ItemGroup>
     <ProjectReference Include="..\FsHttp\FsHttp.fsproj" />
     <!-- See comments for FSharp.Core in FsHttp.fsproj -->
-    <PackageReference Include="FSharp.Core" Version="5.0.2" ExcludeAssets="contentfiles" />
+    <PackageReference Include="FSharp.Core" Version="8.0.400" ExcludeAssets="contentfiles" />
   </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 b31f3f9d..3c4e03a7 100644
--- a/src/FsHttp.NewtonsoftJson/FsHttp.NewtonsoftJson.fsproj
+++ b/src/FsHttp.NewtonsoftJson/FsHttp.NewtonsoftJson.fsproj
@@ -24,6 +24,6 @@
   <ItemGroup>
     <ProjectReference Include="..\FsHttp\FsHttp.fsproj" />
     <!-- See comments for FSharp.Core in FsHttp.fsproj -->
-    <PackageReference Include="FSharp.Core" Version="5.0.2" ExcludeAssets="contentfiles" />
+    <PackageReference Include="FSharp.Core" Version="8.0.400" ExcludeAssets="contentfiles" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/FsHttp/FsHttp.fsproj b/src/FsHttp/FsHttp.fsproj
index 45444e29..8ebd015d 100644
--- a/src/FsHttp/FsHttp.fsproj
+++ b/src/FsHttp/FsHttp.fsproj
@@ -46,6 +46,6 @@
         Removal triggers issues in dotnet publish, e.g. for Lambda projects
         Also avoids Rider search finding stuff in FSharp.Core.xml
     -->
-    <PackageReference Include="FSharp.Core" Version="5.0.2" ExcludeAssets="contentfiles" />
+    <PackageReference Include="FSharp.Core" Version="8.0.400" ExcludeAssets="contentfiles" />
   </ItemGroup>
 </Project>
\ No newline at end of file