diff --git a/node/build.gradle b/node/build.gradle
index 4b016b505c..91e1f43acd 100644
--- a/node/build.gradle
+++ b/node/build.gradle
@@ -79,6 +79,7 @@ dependencies {
     compile "org.slf4j:jul-to-slf4j:$slf4j_version"
 
     compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    runtime "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"
     compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
     testCompile "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
 
diff --git a/tools/explorer/build.gradle b/tools/explorer/build.gradle
index e1d33f438d..9dd20ddc01 100644
--- a/tools/explorer/build.gradle
+++ b/tools/explorer/build.gradle
@@ -11,13 +11,6 @@ processResources {
     from file("$rootDir/config/dev/log4j2.xml")
 }
 
-configurations {
-    compile {
-        // We don't need Hibernate just for its @Type annotation.
-        exclude group: 'org.hibernate', module: 'hibernate-core'
-    }
-}
-
 dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
     testCompile "org.jetbrains.kotlin:kotlin-test:$kotlin_version"