diff --git a/e2e-tests-rust/src/utils.rs b/e2e-tests-rust/src/utils.rs
index 64bf62e6..71de3b50 100644
--- a/e2e-tests-rust/src/utils.rs
+++ b/e2e-tests-rust/src/utils.rs
@@ -66,8 +66,7 @@ impl LockedPort {
 /// or is not needed anymore.
 impl Drop for LockedPort {
     fn drop(&mut self) {
-        self.lockfile
-            .unlock()
+        fs2::FileExt::unlock(&self.lockfile)
             .with_context(|| format!("failed to unlock lockfile for port={}", self.port))
             .unwrap();
     }
diff --git a/spec-tests/src/utils.rs b/spec-tests/src/utils.rs
index 8ba96c20..f5cadbc0 100644
--- a/spec-tests/src/utils.rs
+++ b/spec-tests/src/utils.rs
@@ -64,8 +64,7 @@ impl LockedPort {
 /// or is not needed anymore.
 impl Drop for LockedPort {
     fn drop(&mut self) {
-        self.lockfile
-            .unlock()
+        fs2::FileExt::unlock(&self.lockfile)
             .with_context(|| format!("failed to unlock lockfile for port={}", self.port))
             .unwrap();
     }