diff --git a/Tests/X509Tests/ExtendedKeyUsageTests.swift b/Tests/X509Tests/ExtendedKeyUsageTests.swift
index 6ac9f35..9ecb6c5 100644
--- a/Tests/X509Tests/ExtendedKeyUsageTests.swift
+++ b/Tests/X509Tests/ExtendedKeyUsageTests.swift
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 import XCTest
+import SwiftASN1
 import X509
 
 final class ExtendedKeyUsageTests: XCTestCase {