diff --git a/macro/src/lib.rs b/macro/src/lib.rs
index 2c6c6e5..cdc477c 100644
--- a/macro/src/lib.rs
+++ b/macro/src/lib.rs
@@ -126,10 +126,10 @@ pub fn attr_macro_http_server(_attr: TokenStream, item: TokenStream) -> TokenStr
     quote! {
         struct TheServer;
 
-        impl ::wstd::wasip2::exports::http::incoming_handler::Guest for TheServer {
+        impl ::wstd::__internal::wasip2::exports::http::incoming_handler::Guest for TheServer {
             fn handle(
-                request: ::wstd::wasip2::http::types::IncomingRequest,
-                response_out: ::wstd::wasip2::http::types::ResponseOutparam
+                request: ::wstd::__internal::wasip2::http::types::IncomingRequest,
+                response_out: ::wstd::__internal::wasip2::http::types::ResponseOutparam
             ) {
                 #(#attrs)*
                 #vis async fn __run(#inputs) #output {
@@ -146,7 +146,7 @@ pub fn attr_macro_http_server(_attr: TokenStream, item: TokenStream) -> TokenStr
             }
         }
 
-        ::wstd::wasip2::http::proxy::export!(TheServer with_types_in ::wstd::wasip2);
+        ::wstd::__internal::wasip2::http::proxy::export!(TheServer with_types_in ::wstd::__internal::wasip2);
 
         // Provide an actual function named `main`.
         //
diff --git a/src/lib.rs b/src/lib.rs
index ccbc2c1..88a695f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -70,9 +70,14 @@ pub use wstd_macro::attr_macro_http_server as http_server;
 pub use wstd_macro::attr_macro_main as main;
 pub use wstd_macro::attr_macro_test as test;
 
-// Re-export the wasi crate for use by the `http_server` macro.
+// Re-export the wasip2 crate for use only by `wstd-macro` macros. The proc
+// macros need to generate code that uses these definitions, but we don't want
+// to treat it as part of our public API with regards to semver, so we keep it
+// under `__internal` as well as doc(hidden) to indicate it is private.
 #[doc(hidden)]
-pub use wasip2;
+pub mod __internal {
+    pub use wasip2;
+}
 
 pub mod prelude {
     pub use crate::future::FutureExt as _;