diff --git a/test/images/network-tester/rc.json b/test/images/network-tester/rc.json
index 596f0318e72..1272f6fe2c4 100644
--- a/test/images/network-tester/rc.json
+++ b/test/images/network-tester/rc.json
@@ -22,7 +22,7 @@
         "containers": [
           {
             "name": "webserver",
-            "image": "gcr.io/google_containers/nettest:1.8",
+            "image": "gcr.io/google_containers/nettest:1.9",
             "imagePullPolicy": "Always",
             "args": [
               "-service=nettest",
diff --git a/test/images/network-tester/slow-pod.json b/test/images/network-tester/slow-pod.json
index dee42ef31c9..383e8f3b435 100644
--- a/test/images/network-tester/slow-pod.json
+++ b/test/images/network-tester/slow-pod.json
@@ -11,7 +11,7 @@
     "containers": [
       {
         "name": "webserver",
-        "image": "gcr.io/google_containers/nettest:1.8",
+        "image": "gcr.io/google_containers/nettest:1.9",
         "args": [
           "-service=nettest",
           "-delay-shutdown=10"
diff --git a/test/images/network-tester/slow-rc.json b/test/images/network-tester/slow-rc.json
index 0407e5bc4c6..ff47a93c48a 100644
--- a/test/images/network-tester/slow-rc.json
+++ b/test/images/network-tester/slow-rc.json
@@ -23,7 +23,7 @@
         "containers": [
           {
             "name": "webserver",
-            "image": "gcr.io/google_containers/nettest:1.8",
+            "image": "gcr.io/google_containers/nettest:1.9",
             "args": [
               "-service=nettest",
               "-delay-shutdown=10"