diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index aea05af..3c0dbe0 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -40,6 +40,10 @@ jobs:
     - name: build and test python
       run: |
         make tests-py
+    - name: Cargo publish dry-run
+      working-directory: rust
+      run: cargo publish --dry-run
+
 
   build-windows:
     environment: auto-build
diff --git a/rust/build.rs b/rust/build.rs
index 0e1e56c..57af21c 100644
--- a/rust/build.rs
+++ b/rust/build.rs
@@ -15,7 +15,7 @@ fn main() {
         .file("csonpath_rust_backend.c")
         .include(root_dir)
         .include(&manifest_dir)
-        .flag("-std=c11")
+        .flag("-std=c23")
         .flag("-O2")
         .flag("-fno-strict-aliasing")
         .flag("-Wno-unused-parameter")
diff --git a/rust/csonpath_rust_backend.h b/rust/csonpath_rust_backend.h
index 4c3e84f..77cb5fa 100644
--- a/rust/csonpath_rust_backend.h
+++ b/rust/csonpath_rust_backend.h
@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdint.h>
 
 /* The C core treats JSON values as opaque pointers. All access goes through
  * FFI functions implemented in Rust (backend_serde.rs). */