diff --git a/core/build.gradle b/core/build.gradle
index 6de6f508..fab37697 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -12,7 +12,7 @@ dependencies {
     testCompile "org.grails:grails-datastore-gorm-mongodb:${gormMongoDbVersion}"
     testCompile 'com.github.fakemongo:fongo:2.1.1'
     testRuntime "com.h2database:h2:1.4.192"
-    testRuntime "org.apache.tomcat:tomcat-jdbc:8.5.0"
+    testRuntime "org.apache.tomcat:tomcat-jdbc:8.5.84"
     testRuntime "org.apache.tomcat.embed:tomcat-embed-logging-log4j:8.5.2"
     testRuntime "org.slf4j:slf4j-api:$slf4jVersion"
 }