diff --git a/appengine_war.gradle b/appengine_war.gradle
index a5cd719c8..f447cbf4a 100644
--- a/appengine_war.gradle
+++ b/appengine_war.gradle
@@ -26,6 +26,7 @@ project.convention.plugins['war'].webAppDirName =
 apply plugin: 'com.google.cloud.tools.appengine'
 
 def coreResourcesDir = "${rootDir}/core/build/resources/main"
+def coreLibsDir = "${rootDir}/core/build/libs"
 
 // Get the web.xml file for the service.
 war {
@@ -38,6 +39,10 @@ war {
     from("${coreResourcesDir}/google/registry/ui/html") {
         include "*.html"
     }
+    from("${coreLibsDir}") {
+        include "core.jar"
+        into("WEB-INF/lib")
+    }
 }
 
 if (project.path == ":services:default") {
@@ -98,6 +103,7 @@ rootProject.deploy.dependsOn appengineDeployAll
 rootProject.stage.dependsOn appengineStage
 tasks['war'].dependsOn ':core:compileProdJS'
 tasks['war'].dependsOn ':core:processResources'
+tasks['war'].dependsOn ':core:jar'
 
 // Impose verification for all of the deployment tasks.  We haven't found a
 // better way to do this other than to apply to each of them independently.