diff --git a/build.gradle b/build.gradle
index 127526f..4586639 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,11 +30,19 @@ repositories {
 
 dependencies {
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation ("org.apache.zookeeper:zookeeper:3.4.13") {
+        exclude group: 'log4j', module: 'log4j'
+        exclude group: 'org.slf4j', module: 'slf4j-log4j12'
+    }
+    // drop-in replacement for log4j v1, fixes security issues
+    implementation "ch.qos.reload4j:reload4j:1.2.19"
+    implementation 'org.slf4j:slf4j-reload4j:1.7.36'
+
     implementation "org.apache.kafka:kafka-clients:2.7.0"
     implementation "org.slf4j:slf4j-api:1.7.36"
     implementation "org.slf4j:slf4j-simple:1.7.36"
-    compile "com.google.code.gson:gson:2.0"
+    implementation "com.google.code.gson:gson:2.0"
 }
 
 compileKotlin {