diff --git a/src/EFCore.Proxies/EFCore.Proxies.csproj b/src/EFCore.Proxies/EFCore.Proxies.csproj
index 6021acb74c1..6b2740a680c 100644
--- a/src/EFCore.Proxies/EFCore.Proxies.csproj
+++ b/src/EFCore.Proxies/EFCore.Proxies.csproj
@@ -39,7 +39,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Castle.Core" Version="4.4.1" />
+    <PackageReference Include="Castle.Core" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/test/EFCore.Proxies.Tests/ProxyTests.cs b/test/EFCore.Proxies.Tests/ProxyTests.cs
index 140af44dd7b..0e8cd0bafbd 100644
--- a/test/EFCore.Proxies.Tests/ProxyTests.cs
+++ b/test/EFCore.Proxies.Tests/ProxyTests.cs
@@ -206,28 +206,28 @@ public void Proxy_services_must_be_available()
     public void Throws_if_type_not_available_to_Castle()
     {
         using var context = new NeweyContextN4();
-        Assert.Throws<GeneratorException>(() => context.CreateProxy<McLarenMp421>());
+        Assert.Throws<ArgumentException>(() => context.CreateProxy<McLarenMp421>());
     }
 
     [ConditionalFact]
     public void Throws_if_constructor_not_available_to_Castle()
     {
         using var context = new NeweyContextN5();
-        Assert.Throws<InvalidProxyConstructorArgumentsException>(() => context.CreateProxy<RedBullRb3>());
+        Assert.Throws<ArgumentException>(() => context.CreateProxy<RedBullRb3>());
     }
 
     [ConditionalFact]
     public void CreateProxy_throws_if_constructor_args_do_not_match()
     {
         using var context = new NeweyContext();
-        Assert.Throws<InvalidProxyConstructorArgumentsException>(() => context.CreateProxy<March881>(77, 88));
+        Assert.Throws<ArgumentException>(() => context.CreateProxy<March881>(77, 88));
     }
 
     [ConditionalFact]
     public void CreateProxy_throws_if_wrong_number_of_constructor_args()
     {
         using var context = new NeweyContext();
-        Assert.Throws<InvalidProxyConstructorArgumentsException>(() => context.CreateProxy<March881>(77, 88, 99));
+        Assert.Throws<ArgumentException>(() => context.CreateProxy<March881>(77, 88, 99));
     }
 
     [ConditionalFact]