diff --git a/crates/c-api/include/wasmtime.h b/crates/c-api/include/wasmtime.h
index 857a6a70ce79..e1e4dc456e4e 100644
--- a/crates/c-api/include/wasmtime.h
+++ b/crates/c-api/include/wasmtime.h
@@ -945,7 +945,7 @@ WASM_API_EXTERN own wasmtime_error_t* wasmtime_module_serialize(
  * returned error and module are owned by the caller.
  */
 WASM_API_EXTERN own wasmtime_error_t *wasmtime_module_deserialize(
-    wasm_store_t *store,
+    wasm_engine_t *engine,
     const wasm_byte_vec_t *serialized,
     own wasm_module_t **ret
 );
diff --git a/crates/c-api/src/module.rs b/crates/c-api/src/module.rs
index 451a893b6643..500788dfbaba 100644
--- a/crates/c-api/src/module.rs
+++ b/crates/c-api/src/module.rs
@@ -1,6 +1,6 @@
 use crate::{
-    handle_result, wasm_byte_vec_t, wasm_exporttype_t, wasm_exporttype_vec_t, wasm_importtype_t,
-    wasm_importtype_vec_t, wasm_store_t, wasmtime_error_t,
+    handle_result, wasm_byte_vec_t, wasm_engine_t, wasm_exporttype_t, wasm_exporttype_vec_t,
+    wasm_importtype_t, wasm_importtype_vec_t, wasm_store_t, wasmtime_error_t,
 };
 use std::ptr;
 use wasmtime::{Engine, Module};
@@ -144,12 +144,12 @@ pub extern "C" fn wasmtime_module_serialize(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_module_deserialize(
-    store: &wasm_store_t,
+    engine: &wasm_engine_t,
     binary: &wasm_byte_vec_t,
     ret: &mut *mut wasm_module_t,
 ) -> Option<Box<wasmtime_error_t>> {
     handle_result(
-        Module::deserialize(&store.store.engine(), binary.as_slice()),
+        Module::deserialize(&engine.engine, binary.as_slice()),
         |module| {
             let imports = module
                 .imports()
diff --git a/crates/wasmtime/src/runtime.rs b/crates/wasmtime/src/runtime.rs
index 939c111d60bb..5cbe329ae5c3 100644
--- a/crates/wasmtime/src/runtime.rs
+++ b/crates/wasmtime/src/runtime.rs
@@ -639,8 +639,11 @@ impl Config {
         self.flags.hash(state);
         self.tunables.hash(state);
 
-        let tripple = Triple::host();
-        tripple.hash(state);
+        let triple = Triple::host();
+        triple.hash(state);
+
+        // Catch accidental bugs of reusing across wasmtime versions.
+        env!("CARGO_PKG_VERSION").hash(state);
     }
 }
 
diff --git a/examples/serialize.c b/examples/serialize.c
index 87cc0672d994..6e2407efe0e0 100644
--- a/examples/serialize.c
+++ b/examples/serialize.c
@@ -40,11 +40,6 @@ int serialize(wasm_byte_vec_t* buffer) {
   wasm_engine_t *engine = wasm_engine_new();
   assert(engine != NULL);
 
-  // With an engine we can create a *store* which is a long-lived group of wasm
-  // modules.
-  wasm_store_t *store = wasm_store_new(engine);
-  assert(store != NULL);
-
   // Read our input file, which in this case is a wasm text file.
   FILE* file = fopen("examples/hello.wat", "r");
   assert(file != NULL);
@@ -67,7 +62,7 @@ int serialize(wasm_byte_vec_t* buffer) {
   // and serialize into buffer.
   printf("Compiling and serializing module...\n");
   wasm_module_t *module = NULL;
-  error = wasmtime_module_new(store, &wasm, &module);
+  error = wasmtime_module_new(engine, &wasm, &module);
   wasm_byte_vec_delete(&wasm);
   if (error != NULL)
     exit_with_error("failed to compile module", error, NULL);
@@ -98,7 +93,7 @@ int deserialize(wasm_byte_vec_t* buffer) {
   // Deserialize compiled module.
   printf("Deserialize module...\n");
   wasm_module_t *module = NULL;
-  wasmtime_error_t *error = wasmtime_module_deserialize(store, buffer, &module);
+  wasmtime_error_t *error = wasmtime_module_deserialize(engine, buffer, &module);
   if (error != NULL)
     exit_with_error("failed to compile module", error, NULL);