diff --git a/Cargo.lock b/Cargo.lock
index c3d4b9d..e9f40c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -85,20 +85,6 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
 
-[[package]]
-name = "curio"
-version = "0.1.0"
-dependencies = [
- "env_logger",
- "io-uring",
- "libc",
- "log",
- "send_wrapper",
- "slab",
- "slotmap",
- "unchecked-refcell",
-]
-
 [[package]]
 name = "defmt"
 version = "1.1.1"
@@ -388,6 +374,20 @@ version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d245f478577f809a851594d02313b640fb437e0bb33866753cff937863096954"
 
+[[package]]
+name = "uring_async"
+version = "0.1.0"
+dependencies = [
+ "env_logger",
+ "io-uring",
+ "libc",
+ "log",
+ "send_wrapper",
+ "slab",
+ "slotmap",
+ "unchecked-refcell",
+]
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
diff --git a/Cargo.toml b/Cargo.toml
index 6b4208e..817216f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "curio"
+name = "uring_async"
 version = "0.1.0"
 edition = "2024"
 
diff --git a/src/lib.rs b/src/lib.rs
index 045fce5..314dc66 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -60,6 +60,8 @@ impl Runtime {
             .setup_no_sqarray()
             .build(128)
             .expect("failed to create ring");
+        assert!(ring.params().is_feature_nodrop(), "missing IORING_FEAT_NODROP (kernel 5.19)");
+        assert!(ring.params().is_feature_ext_arg(), "missing IORING_FEAT_EXT_ARG (kernel 5.11)");
         let submitter = ring.submitter();
         submitter
             .register_restrictions(&mut [Restriction::sqe_op(Nop::CODE)])
@@ -95,7 +97,7 @@ impl Runtime {
             if lock.is_some() {
                 panic!("runtime already initialized on this thread");
             }
-            *lock = Some(Runtime(Rc::clone(&self.0)))
+            *lock = Some(Runtime(Rc::clone(&self.0)));
         });
 
         let mut lock = self.0.borrow_mut();
@@ -211,6 +213,10 @@ impl Runtime {
                 lock = self.0.borrow_mut();
             }
         }
+        RT.with(|cell| {
+            let mut lock = cell.borrow_mut();
+            *lock = None;
+        });
         trace!("Exiting");
     }
 }