diff --git a/Cargo.toml b/Cargo.toml
index 6101dfa..3fcd504 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mimalloc"
-version = "0.1.42"
+version = "0.1.43"
 authors = [
     "Octavian Oncescu <octavonce@gmail.com>",
     "Vincent Rouillé <vincent@speedy37.fr>",
@@ -21,7 +21,7 @@ members = ["libmimalloc-sys", "libmimalloc-sys/sys-test"]
 travis-ci = { repository = "purpleprotocol/mimalloc_rust" }
 
 [dependencies]
-libmimalloc-sys = { path = "libmimalloc-sys", version = "0.1.38", default-features = false }
+libmimalloc-sys = { path = "libmimalloc-sys", version = "0.1.39", default-features = false }
 
 [features]
 default = []
diff --git a/libmimalloc-sys/Cargo.toml b/libmimalloc-sys/Cargo.toml
index 963594a..78269aa 100644
--- a/libmimalloc-sys/Cargo.toml
+++ b/libmimalloc-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "libmimalloc-sys"
-version = "0.1.38"
+version = "0.1.39"
 authors = ["Octavian Oncescu <octavonce@gmail.com>"]
 edition = "2018"
 repository = "https://github.com/purpleprotocol/mimalloc_rust/tree/master/libmimalloc-sys"
diff --git a/libmimalloc-sys/build.rs b/libmimalloc-sys/build.rs
index 50c05c6..748503e 100644
--- a/libmimalloc-sys/build.rs
+++ b/libmimalloc-sys/build.rs
@@ -57,6 +57,6 @@ fn main() {
 
     // on armv6 we need to link with libatomic
     if target_os == "linux" && target_arch == "arm" {
-        println!("cargo:rustc-link-lib=dylib=atomic");
+        println!("cargo:rustc-link-lib=atomic");
     }
 }
diff --git a/libmimalloc-sys/c_src/mimalloc b/libmimalloc-sys/c_src/mimalloc
index 6141843..8c532c3 160000
--- a/libmimalloc-sys/c_src/mimalloc
+++ b/libmimalloc-sys/c_src/mimalloc
@@ -1 +1 @@
-Subproject commit 6141843614220c4d85f55774c131a68ba778e413
+Subproject commit 8c532c32c3c96e5ba1f2283e032f69ead8add00f
diff --git a/libmimalloc-sys/src/extended.rs b/libmimalloc-sys/src/extended.rs
index 416ff16..db9876f 100644
--- a/libmimalloc-sys/src/extended.rs
+++ b/libmimalloc-sys/src/extended.rs
@@ -546,7 +546,7 @@ pub const mi_option_max_warnings: mi_option_t = 20;
 pub const mi_option_max_segment_reclaim: mi_option_t = 21;
 
 /// Last option.
-pub const _mi_option_last: mi_option_t = 28;
+pub const _mi_option_last: mi_option_t = 29;
 
 extern "C" {
     // Note: mi_option_{enable,disable} aren't exposed because they're redundant
@@ -1013,6 +1013,16 @@ extern "C" {
 mod tests {
     use super::*;
 
+    #[test]
+    fn it_calculates_usable_size() {
+        let ptr = unsafe { mi_malloc(32) } as *mut u8;
+        let usable_size = unsafe { mi_usable_size(ptr as *mut c_void) };
+        assert!(
+            usable_size >= 32,
+            "usable_size should at least equal to the allocated size"
+        );
+    }
+
     #[test]
     fn runtime_stable_option() {
         unsafe {
diff --git a/libmimalloc-sys/src/lib.rs b/libmimalloc-sys/src/lib.rs
index 53721eb..ecc9f3a 100644
--- a/libmimalloc-sys/src/lib.rs
+++ b/libmimalloc-sys/src/lib.rs
@@ -89,14 +89,4 @@ mod tests {
         let ptr = unsafe { mi_realloc_aligned(ptr as *mut c_void, 8, 8) } as *mut u8;
         unsafe { mi_free(ptr as *mut c_void) };
     }
-
-    #[test]
-    fn it_calculates_usable_size() {
-        let ptr = unsafe { mi_malloc(32) } as *mut u8;
-        let usable_size = unsafe { mi_usable_size(ptr as *mut c_void) };
-        assert!(
-            usable_size >= 32,
-            "usable_size should at least equal to the allocated size"
-        );
-    }
 }