diff --git a/src/macos.rs b/src/macos.rs
index d6ffb81..c37aba4 100644
--- a/src/macos.rs
+++ b/src/macos.rs
@@ -39,6 +39,7 @@ pub fn enumerate_platform(vid: Option<u16>, pid: Option<u16>) -> Vec<UsbDevice>
 
             let properties: CFDictionary<CFString, CFType> =
                 CFMutableDictionary::wrap_under_get_rule(props).to_immutable();
+            CFRelease(props.as_void_ptr());
 
             let _ = || -> Result<(), Box<dyn Error>> {
                 let key = CFString::from_static_string("idVendor");