diff --git a/ash/src/vk/platform_types.rs b/ash/src/vk/platform_types.rs
index faccad3..340403c 100644
--- a/ash/src/vk/platform_types.rs
+++ b/ash/src/vk/platform_types.rs
@@ -27,8 +27,6 @@ pub type zx_handle_t = u32;
 pub type SECURITY_ATTRIBUTES = ();
 pub type ANativeWindow = c_void;
 pub type AHardwareBuffer = c_void;
-#[doc = r" This definition is experimental and won't adhere to semver rules."]
-pub type GgpStreamDescriptor = u32;
-#[doc = r" This definition is experimental and won't adhere to semver rules."]
-pub type GgpFrameToken = u32;
 pub type CAMetalLayer = c_void;
+pub type GgpStreamDescriptor = u32;
+pub type GgpFrameToken = u64;
diff --git a/generator/src/lib.rs b/generator/src/lib.rs
index c9f972e..1420351 100644
--- a/generator/src/lib.rs
+++ b/generator/src/lib.rs
@@ -362,11 +362,11 @@ pub fn platform_specific_types() -> Tokens {
         // Opage types
         pub type ANativeWindow = c_void;
         pub type AHardwareBuffer = c_void;
-        /// This definition is experimental and won't adhere to semver rules.
-        pub type GgpStreamDescriptor = u32;
-        /// This definition is experimental and won't adhere to semver rules.
-        pub type GgpFrameToken = u32;
         pub type CAMetalLayer = c_void;
+        // This definition is behind an NDA with a best effort guess from
+        // https://github.com/google/gapid/commit/22aafebec4638c6aaa77667096bca30f6e842d95#diff-ab3ab4a7d89b4fc8a344ff4e9332865f268ea1669ee379c1b516a954ecc2e7a6R20-R21
+        pub type GgpStreamDescriptor = u32;
+        pub type GgpFrameToken = u64;
     }
 }
 #[derive(Debug, Copy, Clone)]