diff --git a/rust-version b/rust-version
index e19cca38c04..3b96c994a78 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-38030ffb4e735b26260848b744c0910a5641e1db
+12f0dba618e761c987142474435dff95ab177f3c
diff --git a/tests/run-pass/concurrency/linux-futex.rs b/tests/run-pass/concurrency/linux-futex.rs
index 391e9524324..0f2a0236326 100644
--- a/tests/run-pass/concurrency/linux-futex.rs
+++ b/tests/run-pass/concurrency/linux-futex.rs
@@ -90,7 +90,7 @@ fn wait_timeout() {
         assert_eq!(*libc::__errno_location(), libc::ETIMEDOUT);
     }
 
-    assert!((200..500).contains(&start.elapsed().as_millis()));
+    assert!((200..1000).contains(&start.elapsed().as_millis()));
 }
 
 fn wait_wake() {
@@ -120,7 +120,7 @@ fn wait_wake() {
         ), 0);
     }
 
-    assert!((200..500).contains(&start.elapsed().as_millis()));
+    assert!((200..1000).contains(&start.elapsed().as_millis()));
 }
 
 fn main() {