diff --git a/gateway-ha/src/test/java/com/lyft/data/gateway/ha/HaGatewayTestUtils.java b/gateway-ha/src/test/java/com/lyft/data/gateway/ha/HaGatewayTestUtils.java
index d0cb9a29..1ce6a3ad 100644
--- a/gateway-ha/src/test/java/com/lyft/data/gateway/ha/HaGatewayTestUtils.java
+++ b/gateway-ha/src/test/java/com/lyft/data/gateway/ha/HaGatewayTestUtils.java
@@ -8,6 +8,7 @@
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.file.Files;
 import java.util.Random;
 import java.util.Scanner;
 
@@ -72,7 +73,7 @@ public static TestConfig buildGatewayConfigAndSeedDb(int routerPort) throws IOEx
                 "APPLICATION_CONNECTOR_PORT", String.valueOf(30000 + (int) (Math.random() * 1000)))
             .replace("ADMIN_CONNECTOR_PORT", String.valueOf(31000 + (int) (Math.random() * 1000)));
 
-    File target = File.createTempFile("config-" + System.currentTimeMillis(), "config.yaml");
+    File target = Files.createTempFile("config-" + System.currentTimeMillis(), "config.yaml").toFile();
 
     FileWriter fw = new FileWriter(target);
     fw.append(configStr);
diff --git a/gateway-ha/src/test/java/com/lyft/data/gateway/ha/router/TestRoutingGroupSelector.java b/gateway-ha/src/test/java/com/lyft/data/gateway/ha/router/TestRoutingGroupSelector.java
index 1da4fa83..b66a51c3 100644
--- a/gateway-ha/src/test/java/com/lyft/data/gateway/ha/router/TestRoutingGroupSelector.java
+++ b/gateway-ha/src/test/java/com/lyft/data/gateway/ha/router/TestRoutingGroupSelector.java
@@ -6,6 +6,7 @@
 
 import java.io.File;
 import java.io.FileWriter;
+import java.nio.file.Files;
 import java.util.Scanner;
 import javax.servlet.http.HttpServletRequest;
 import org.testng.Assert;
@@ -83,7 +84,7 @@ public void testByRoutingRulesEngineNoMatch(String rulesConfigPath) {
   }
 
   public void testByRoutingRulesEngineFileChange() throws Exception {
-    File file = File.createTempFile("routing_rules", ".yml");
+    File file = Files.createTempFile("routing_rules", ".yml").toFile();
 
     FileWriter fw = new FileWriter(file);
     fw.write(