diff --git a/tools/buildimage/lib/imgadm/package-lock.json b/tools/buildimage/lib/imgadm/package-lock.json
index a84b068..e3a0b0b 100644
--- a/tools/buildimage/lib/imgadm/package-lock.json
+++ b/tools/buildimage/lib/imgadm/package-lock.json
@@ -513,9 +513,9 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
     },
     "concat-stream": {
-      "version": "1.4.10",
-      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.4.10.tgz",
-      "integrity": "sha1-rMO79WAsuMyYDGrIQPp9hgPj7zY=",
+      "version": "1.4.11",
+      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.4.11.tgz",
+      "integrity": "sha512-X3JMh8+4je3U1cQpG87+f9lXHDrqcb2MVLg9L7o8b1UZ0DzhRrUpdn65ttzu10PpJPPI3MQNkis+oha6TSA9Mw==",
       "requires": {
         "inherits": "~2.0.1",
         "readable-stream": "~1.1.9",
diff --git a/tools/buildimage/lib/imgadm/package.json b/tools/buildimage/lib/imgadm/package.json
index ce445fe..5344307 100644
--- a/tools/buildimage/lib/imgadm/package.json
+++ b/tools/buildimage/lib/imgadm/package.json
@@ -10,7 +10,7 @@
     "backoff": "2.4.0",
     "bunyan": "1.8.12",
     "cmdln": "3.2.1",
-    "concat-stream": "1.4.10",
+    "concat-stream": "1.4.11",
     "docker-registry-client": "3.2.10",
     "extsprintf": "1.2.0",
     "findit2": "2.2.3",