diff --git a/tests/fcc.tests/fcc.tests.fsproj b/tests/fcc.tests/fcc.tests.fsproj
index c601680..871f60f 100644
--- a/tests/fcc.tests/fcc.tests.fsproj
+++ b/tests/fcc.tests/fcc.tests.fsproj
@@ -12,7 +12,7 @@
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
         <PackageReference Include="NUnit" Version="4.4.0"/>
         <PackageReference Include="NUnit3TestAdapter" Version="5.1.0"/>
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0"/>
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0"/>
     </ItemGroup>
 
     <ItemGroup>
diff --git a/tools/ancp/fcc/fcc.fsproj b/tools/ancp/fcc/fcc.fsproj
index 5611dc9..36670ee 100644
--- a/tools/ancp/fcc/fcc.fsproj
+++ b/tools/ancp/fcc/fcc.fsproj
@@ -27,7 +27,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0"/>
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0"/>
     </ItemGroup>
 
 </Project>