diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9fd45e0..c596637 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -15,6 +15,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - name: Check rizin
+      uses: actions/checkout@master
+      with:
+        repository: rizinorg/rizin
+        ref: refs/heads/dev
+        path: rizin
+    - name: Build rizin
+      run: |
+        cd rizin
+        pip install meson
+        meson setup --debug --buildtype=release --prefix=(realpath $HOME/.local) build
+        ninja install -C build
     - uses: actions/checkout@v4
     - name: Build
       run: cargo build --verbose
diff --git a/il-tests/src/main.rs b/il-tests/src/main.rs
index b167abe..c53bf67 100644
--- a/il-tests/src/main.rs
+++ b/il-tests/src/main.rs
@@ -47,25 +47,22 @@ impl Display for Instruction {
 }
 
 const INST_LIMIT: usize = 0x8_usize;
-const MAX: u32 = u16::MAX as _;
+const MAX: u32 = u32::MAX;
 const ADDRS: [usize; 2] = [0, 0xff00];
 
 fn main() -> Result<(), Box<dyn Error>> {
     let n = MAX / (rayon::current_num_threads() as u32);
     let map = Arc::new(DashMap::<String, usize>::new());
-    let core = Arc::new(Mutex::new({
+    let core = Arc::new({
         let core = Core::new();
         core.set("analysis.arch", "pic").unwrap();
         core.set("analysis.cpu", "pic18").unwrap();
         core
-    }));
-    let runner = |core: Arc<Mutex<Core>>, map: Arc<DashMap<String, usize>>, x: u32| {
+    });
+    let runner = |core: Arc<Core>, map: Arc<DashMap<String, usize>>, x: u32| {
         let b: [u8; 4] = x.to_le_bytes();
         for addr in ADDRS {
-            let inst = {
-                let core = core.lock().unwrap();
-                Instruction::from_bytes(&core, &b, addr)
-            };
+            let inst = { Instruction::from_bytes(&core, &b, addr) };
             if inst.is_err() {
                 continue;
             }