diff --git a/src/test/java/com/networknt/schema/BaseSuiteJsonSchemaTest.java b/src/test/java/com/networknt/schema/BaseSuiteJsonSchemaTest.java
index 383ff8fd0..eeebfe3be 100644
--- a/src/test/java/com/networknt/schema/BaseSuiteJsonSchemaTest.java
+++ b/src/test/java/com/networknt/schema/BaseSuiteJsonSchemaTest.java
@@ -60,6 +60,7 @@ public static void tearDown() throws Exception {
             try {
                 Thread.sleep(100);
             } catch (InterruptedException ignored) {
+				Thread.currentThread().interrupt();
 
             }
             server.stop();
diff --git a/src/test/java/com/networknt/schema/Issue425Test.java b/src/test/java/com/networknt/schema/Issue425Test.java
index 1becc039c..878f66fb0 100644
--- a/src/test/java/com/networknt/schema/Issue425Test.java
+++ b/src/test/java/com/networknt/schema/Issue425Test.java
@@ -46,6 +46,7 @@ public static void tearDown() throws Exception {
             try {
                 Thread.sleep(100);
             } catch (InterruptedException ignored) {
+                Thread.currentThread().interrupt();
 
             }
             server.stop();
diff --git a/src/test/java/com/networknt/schema/Issue428Test.java b/src/test/java/com/networknt/schema/Issue428Test.java
index cdedc78ca..4f3ed8f59 100644
--- a/src/test/java/com/networknt/schema/Issue428Test.java
+++ b/src/test/java/com/networknt/schema/Issue428Test.java
@@ -46,6 +46,7 @@ public static void tearDown() throws Exception {
             try {
                 Thread.sleep(100);
             } catch (InterruptedException ignored) {
+                Thread.currentThread().interrupt();
 
             }
             server.stop();
diff --git a/src/test/java/com/networknt/schema/OpenAPI30JsonSchemaTest.java b/src/test/java/com/networknt/schema/OpenAPI30JsonSchemaTest.java
index f5896d051..f694ba4f8 100644
--- a/src/test/java/com/networknt/schema/OpenAPI30JsonSchemaTest.java
+++ b/src/test/java/com/networknt/schema/OpenAPI30JsonSchemaTest.java
@@ -46,6 +46,7 @@ public static void tearDown() throws Exception {
             try {
                 Thread.sleep(100);
             } catch (InterruptedException ignored) {
+                Thread.currentThread().interrupt();
 
             }
             server.stop();