diff --git a/src/browserenginecore.cs b/src/browserenginecore.cs
index caa35ab594bb..dd5ce1d75c43 100644
--- a/src/browserenginecore.cs
+++ b/src/browserenginecore.cs
@@ -6,7 +6,7 @@
 using ObjCRuntime;
 
 namespace BrowserEngineCore {
-	[NoMacCatalyst, NoTV, NoMac, iOS (26, 0)]
+	[MacCatalyst (26, 4), NoTV, NoMac, iOS (26, 0)]
 	[BaseType (typeof (NSObject))]
 	[DisableDefaultCtor]
 	interface BEAudioSession {
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BrowserEngineCore.todo b/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BrowserEngineCore.ignore
similarity index 53%
rename from tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BrowserEngineCore.todo
rename to tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BrowserEngineCore.ignore
index 0c3a46036125..6d97493a81b6 100644
--- a/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BrowserEngineCore.todo
+++ b/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BrowserEngineCore.ignore
@@ -1,3 +1,6 @@
+# We're not exposing BrowserEngineKi/Core on Mac Catalyst for now, because introspection complains
+# about pretty much everything, which makes me question whether it's supposed to be available
+# on Mac Catalyst or not. So for now leave it out of Mac Catalyst.
 !missing-selector! BEAudioSession::availableOutputs not bound
 !missing-selector! BEAudioSession::initWithAudioSession: not bound
 !missing-selector! BEAudioSession::preferredOutput not bound
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/macOS-BrowserEngineCore.todo b/tests/xtro-sharpie/api-annotations-dotnet/iOS-BrowserEngineCore.ignore
similarity index 59%
rename from tests/xtro-sharpie/api-annotations-dotnet/macOS-BrowserEngineCore.todo
rename to tests/xtro-sharpie/api-annotations-dotnet/iOS-BrowserEngineCore.ignore
index c4a95b2bb2d6..e8c2499d8fc9 100644
--- a/tests/xtro-sharpie/api-annotations-dotnet/macOS-BrowserEngineCore.todo
+++ b/tests/xtro-sharpie/api-annotations-dotnet/iOS-BrowserEngineCore.ignore
@@ -1,5 +1,10 @@
+# Low-level C P/Invoke functions for JIT memory management and kernel events.
+# These use hidden visibility, always_inline, or complex kernel structs (kevent)
+# and are not suitable for .NET consumption.
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rw_with_witness is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rw_with_witness_impl is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rx_with_witness is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rx_with_witness_impl is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_with_witness_supported is not bound
+!missing-pinvoke! be_kevent is not bound
+!missing-pinvoke! be_kevent64 is not bound
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/iOS-BrowserEngineCore.todo b/tests/xtro-sharpie/api-annotations-dotnet/macOS-BrowserEngineCore.ignore
similarity index 74%
rename from tests/xtro-sharpie/api-annotations-dotnet/iOS-BrowserEngineCore.todo
rename to tests/xtro-sharpie/api-annotations-dotnet/macOS-BrowserEngineCore.ignore
index ac20cba33283..39b331d9f98d 100644
--- a/tests/xtro-sharpie/api-annotations-dotnet/iOS-BrowserEngineCore.todo
+++ b/tests/xtro-sharpie/api-annotations-dotnet/macOS-BrowserEngineCore.ignore
@@ -1,7 +1,7 @@
+# Low-level C P/Invoke functions for JIT memory management.
+# These use hidden visibility or always_inline and are not suitable for .NET consumption.
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rw_with_witness is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rw_with_witness_impl is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rx_with_witness is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_rwx_to_rx_with_witness_impl is not bound
 !missing-pinvoke! be_memory_inline_jit_restrict_with_witness_supported is not bound
-!missing-pinvoke! be_kevent is not bound
-!missing-pinvoke! be_kevent64 is not bound