diff --git a/h2o-assemblies/main/build.gradle b/h2o-assemblies/main/build.gradle
index 6231736b5867..f4d48e5d7860 100644
--- a/h2o-assemblies/main/build.gradle
+++ b/h2o-assemblies/main/build.gradle
@@ -93,10 +93,6 @@ shadowJar {
   zip64 true
   mergeServiceFiles()
   classifier = ''
-  // CDH 5.3.0 provides joda-time v1.6 which is too old, shadow the library instead
-  if (!project.hasProperty("jacocoCoverage")) {
-    relocate 'org.joda.time', 'ai.h2o.org.joda.time'
-  }
   exclude 'META-INF/*.DSA'
   exclude 'META-INF/*.SF'
   exclude 'synchronize.properties'
diff --git a/h2o-core/build.gradle b/h2o-core/build.gradle
index bd32b554a2f6..03a872b75898 100644
--- a/h2o-core/build.gradle
+++ b/h2o-core/build.gradle
@@ -29,6 +29,10 @@ dependencies {
   testRuntimeOnly project(":${defaultWebserverModule}")
   testCompileOnly "javax.servlet:javax.servlet-api:${servletApiVersion}"
   testImplementation "com.amazonaws:aws-java-sdk-s3:${awsJavaSdkVersion}"
+  
+  constraints {
+    implementation group: 'com.fasterxml.jackson.core', name: 'jackson-core', version: '2.15.0'
+  }
 }
 
 apply from: "${rootDir}/gradle/dataCheck.gradle"