diff --git a/envs/monkey_zoo/docs/fullDocs.md b/envs/monkey_zoo/docs/fullDocs.md
index 71a373843..01328eb03 100644
--- a/envs/monkey_zoo/docs/fullDocs.md
+++ b/envs/monkey_zoo/docs/fullDocs.md
@@ -1314,6 +1314,66 @@ Update all requirements using deployment script:<br>
 </tbody>
 </table>
 
+<table>
+<thead>
+<tr class="header">
+<th><p><span id="_Toc536021485" class="anchor"></span>Nr. <strong>3-55 Log4j Logstash</strong></p>
+<p>(10.2.3.55)</p></th>
+<th>(Vulnerable)</th>
+</tr>
+</thead>
+<tbody>
+<tr class="odd">
+<td>OS:</td>
+<td><strong>Ubuntu 18.04LTS</strong></td>
+</tr>
+<tr class="even">
+<td>Software:</td>
+<td>Logstash 5.5.0</td>
+<td>Java 1.8.0</td>
+</tr>
+<tr class="odd">
+<td>Default server’s port:</td>
+<td>9600</td>
+</tr>
+<tr class="even">
+<td>Notes:</td>
+<td>User: logstash</td>
+<td></td>
+</tr>
+</tbody>
+</table>
+
+<table>
+<thead>
+<tr class="header">
+<th><p><span id="_Toc536021486" class="anchor"></span>Nr. <strong>3-56 Log4j-logstash</strong></p>
+<p>(10.2.3.56)</p></th>
+<th>(Vulnerable)</th>
+</tr>
+</thead>
+<tbody>
+<tr class="odd">
+<td>OS:</td>
+<td><strong>Windows Server 2016 x64</strong></td>
+</tr>
+<tr class="even">
+<td>Software:</td>
+<td>Logstash 5.5.0</td>
+<td>Java 1.8.0</td>
+</tr>
+<tr class="odd">
+<td>Default server’s port:</td>
+<td>9600</td>
+</tr>
+<tr class="even">
+<td>Notes:</td>
+<td>User: m0nk3y, Password: 7;@K"kPTM</td>
+</tr>
+</tbody>
+</table>
+
+
 <table>
 <thead>
 <tr class="header">
diff --git a/envs/monkey_zoo/terraform/images.tf b/envs/monkey_zoo/terraform/images.tf
index b5a2fbee7..d32b964a5 100644
--- a/envs/monkey_zoo/terraform/images.tf
+++ b/envs/monkey_zoo/terraform/images.tf
@@ -93,6 +93,14 @@ data "google_compute_image" "log4j-solr-50" {
   name = "log4j-solr-50"
   project = local.monkeyzoo_project
 }
+data "google_compute_image" "log4j-logstash-55" {
+  name = "log4j-logstash-55"
+  project = local.monkeyzoo_project
+}
+data "google_compute_image" "log4j-logstash-56" {
+  name = "log4j-logstash-56"
+  project = local.monkeyzoo_project
+}
 data "google_compute_image" "weblogic-18" {
   name = "weblogic-18"
   project = local.monkeyzoo_project
diff --git a/envs/monkey_zoo/terraform/monkey_zoo.tf b/envs/monkey_zoo/terraform/monkey_zoo.tf
index c545af20c..cefc78af5 100644
--- a/envs/monkey_zoo/terraform/monkey_zoo.tf
+++ b/envs/monkey_zoo/terraform/monkey_zoo.tf
@@ -448,6 +448,36 @@ resource "google_compute_instance_from_template" "log4j-tomcat-52" {
   }
 }
 
+resource "google_compute_instance_from_template" "log4j-logstash-55" {
+  name = "${local.resource_prefix}log4j-logstash-55"
+  source_instance_template = local.default_linux
+  boot_disk{
+    initialize_params {
+      image = data.google_compute_image.log4j-logstash-55.self_link
+    }
+    auto_delete = true
+  }
+  network_interface {
+    subnetwork="${local.resource_prefix}monkeyzoo-main"
+    network_ip="10.2.3.55"
+  }
+}
+
+resource "google_compute_instance_from_template" "log4j-logstash-56" {
+  name = "${local.resource_prefix}log4j-logstash-56"
+  source_instance_template = local.default_windows
+  boot_disk{
+    initialize_params {
+      image = data.google_compute_image.log4j-logstash-56.self_link
+    }
+    auto_delete = true
+  }
+  network_interface {
+    subnetwork="${local.resource_prefix}monkeyzoo-main"
+    network_ip="10.2.3.56"
+  }
+}
+
 /* We need to alter monkey's behavior for this to upload 32-bit monkey instead of 64-bit (not yet developed)
 resource "google_compute_instance_from_template" "upgrader-17" {
   name = "${local.resource_prefix}upgrader-17"