diff --git a/crates/rb-sys-tests/src/stable_api_test.rs b/crates/rb-sys-tests/src/stable_api_test.rs
index 349c5e44..8c3156ca 100644
--- a/crates/rb-sys-tests/src/stable_api_test.rs
+++ b/crates/rb-sys-tests/src/stable_api_test.rs
@@ -652,6 +652,6 @@ parity_test!(
     name: test_rb_thread_sleep,
     func: thread_sleep,
     data_factory: {
-        std::time::Duration::from_secs(1)
+        std::time::Duration::from_millis(100)
     }
 );
diff --git a/crates/rb-sys/src/stable_api.rs b/crates/rb-sys/src/stable_api.rs
index 4c7b37c2..10b34f9c 100644
--- a/crates/rb-sys/src/stable_api.rs
+++ b/crates/rb-sys/src/stable_api.rs
@@ -14,7 +14,8 @@
 use crate::VALUE;
 use std::{
     os::raw::{c_char, c_long},
-    ptr::NonNull, time::Duration,
+    ptr::NonNull,
+    time::Duration,
 };
 
 pub trait StableApiDefinition {
diff --git a/crates/rb-sys/src/stable_api/compiled.rs b/crates/rb-sys/src/stable_api/compiled.rs
index 5057b003..527fabd0 100644
--- a/crates/rb-sys/src/stable_api/compiled.rs
+++ b/crates/rb-sys/src/stable_api/compiled.rs
@@ -203,14 +203,14 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
             tv_usec: microseconds,
         };
-        
+
         unsafe { impl_thread_sleep(time) }
-    }   
+    }
 }
diff --git a/crates/rb-sys/src/stable_api/ruby_2_6.rs b/crates/rb-sys/src/stable_api/ruby_2_6.rs
index 517a433f..0407f8d7 100644
--- a/crates/rb-sys/src/stable_api/ruby_2_6.rs
+++ b/crates/rb-sys/src/stable_api/ruby_2_6.rs
@@ -104,7 +104,7 @@ impl StableApiDefinition for Definition {
         if self.special_const_p(obj) {
             true
         } else {
-            let rbasic = obj as *const crate::Rbasic;
+            let rbasic = obj as *const crate::RBasic;
             ((*rbasic).flags & crate::ruby_fl_type::RUBY_FL_FREEZE as VALUE) != 0
         }
     }
@@ -266,8 +266,8 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
diff --git a/crates/rb-sys/src/stable_api/ruby_2_7.rs b/crates/rb-sys/src/stable_api/ruby_2_7.rs
index 96e96861..e5a1eb12 100644
--- a/crates/rb-sys/src/stable_api/ruby_2_7.rs
+++ b/crates/rb-sys/src/stable_api/ruby_2_7.rs
@@ -266,8 +266,8 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
diff --git a/crates/rb-sys/src/stable_api/ruby_3_0.rs b/crates/rb-sys/src/stable_api/ruby_3_0.rs
index f96330f0..cd22ae7a 100644
--- a/crates/rb-sys/src/stable_api/ruby_3_0.rs
+++ b/crates/rb-sys/src/stable_api/ruby_3_0.rs
@@ -274,8 +274,8 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
diff --git a/crates/rb-sys/src/stable_api/ruby_3_1.rs b/crates/rb-sys/src/stable_api/ruby_3_1.rs
index f9220646..a604426f 100644
--- a/crates/rb-sys/src/stable_api/ruby_3_1.rs
+++ b/crates/rb-sys/src/stable_api/ruby_3_1.rs
@@ -267,8 +267,8 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
diff --git a/crates/rb-sys/src/stable_api/ruby_3_2.rs b/crates/rb-sys/src/stable_api/ruby_3_2.rs
index 3127b520..52e0067e 100644
--- a/crates/rb-sys/src/stable_api/ruby_3_2.rs
+++ b/crates/rb-sys/src/stable_api/ruby_3_2.rs
@@ -265,8 +265,8 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
diff --git a/crates/rb-sys/src/stable_api/ruby_3_3.rs b/crates/rb-sys/src/stable_api/ruby_3_3.rs
index bae77096..d068fac1 100644
--- a/crates/rb-sys/src/stable_api/ruby_3_3.rs
+++ b/crates/rb-sys/src/stable_api/ruby_3_3.rs
@@ -258,14 +258,14 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,
             tv_usec: microseconds,
         };
-        
+
         unsafe { crate::rb_thread_wait_for(time) }
     }
 }
diff --git a/crates/rb-sys/src/stable_api/ruby_3_4.rs b/crates/rb-sys/src/stable_api/ruby_3_4.rs
index 93dca507..74a82f5b 100644
--- a/crates/rb-sys/src/stable_api/ruby_3_4.rs
+++ b/crates/rb-sys/src/stable_api/ruby_3_4.rs
@@ -258,8 +258,8 @@ impl StableApiDefinition for Definition {
 
     #[inline]
     fn thread_sleep(&self, duration: Duration) {
-        let seconds = duration.as_secs() as i64;
-        let microseconds = duration.subsec_micros() as i64;
+        let seconds = duration.as_secs() as _;
+        let microseconds = duration.subsec_micros() as _;
 
         let time = crate::timeval {
             tv_sec: seconds,