diff --git a/docker/Dockerfile b/docker/Dockerfile
index 7421ac4a..68c33ac9 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -15,11 +15,14 @@ COPY zu /zu
 WORKDIR /zu
 RUN ./gradlew --console=verbose --info shadowJar
 
-FROM ${DOCKER_REGISTRY:+$DOCKER_REGISTRY/}zookeeper:3.8.3-jre-11
+FROM ${DOCKER_REGISTRY:+$DOCKER_REGISTRY/}zookeeper:3.7.2-jre-11
 COPY bin /usr/local/bin
 RUN chmod +x /usr/local/bin/*
 COPY --from=0 /zu/build/libs/zu.jar /opt/libs/
 
 RUN apt-get -q update && \
-    apt-get install -y dnsutils curl procps socat; \
-    rm -rf /var/lib/apt/lists/*;
\ No newline at end of file
+    apt-get install -y dnsutils curl procps socat; 
+
+RUN apt-get upgrade curl
+
+
diff --git a/docker/zu/build.gradle.kts b/docker/zu/build.gradle.kts
index 1a2f15ed..d37a5380 100644
--- a/docker/zu/build.gradle.kts
+++ b/docker/zu/build.gradle.kts
@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
     kotlin("jvm") version "1.9.24"
-    id("com.github.johnrengelman.shadow") version "7.1.2"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
 }
 
 repositories {
@@ -16,7 +16,7 @@ dependencies {
 }
 
 tasks.withType<ShadowJar>() {
-    classifier = null
+    archiveClassifier = null
     manifest {
         attributes["Main-Class"] = "io.pravega.zookeeper.MainKt"
     }
diff --git a/docker/zu/gradle/wrapper/gradle-wrapper.properties b/docker/zu/gradle/wrapper/gradle-wrapper.properties
index 3994438e..48c0a02c 100644
--- a/docker/zu/gradle/wrapper/gradle-wrapper.properties
+++ b/docker/zu/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists