diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8be61a2..2975aad 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        rust: [1.36.0, stable, beta, nightly]
+        rust: [1.50.0, stable, beta, nightly]
       fail-fast: false
 
     steps:
diff --git a/Cargo.toml b/Cargo.toml
index dac9177..5ad5e99 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ license = "MIT"
 name = "usb_enumeration"
 readme = "README.md"
 repository = "https://github.com/meatysolutions/usb_enumeration"
-version = "0.2.0"
+version = "0.2.1"
 
 [lib]
 crate-type = ["lib"]
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");