diff --git a/build.gradle b/build.gradle
index 505f7a2be..46bcdda92 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,7 +24,7 @@ buildscript {
   }
 
   dependencies {
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.0.1'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.1'
     classpath 'net.ltgt.gradle:gradle-errorprone-plugin:0.6.1'
     classpath 'org.sonatype.aether:aether-api:1.13.1'
     classpath 'org.sonatype.aether:aether-impl:1.13.1'
diff --git a/gradle/dependency-locks/buildscript-classpath.lockfile b/gradle/dependency-locks/buildscript-classpath.lockfile
index 54490dcdb..e8553c072 100644
--- a/gradle/dependency-locks/buildscript-classpath.lockfile
+++ b/gradle/dependency-locks/buildscript-classpath.lockfile
@@ -13,15 +13,15 @@ com.github.jengelman.gradle.plugins:shadow:5.1.0
 com.github.johnrengelman.shadow:com.github.johnrengelman.shadow.gradle.plugin:5.1.0
 com.github.node-gradle.node:com.github.node-gradle.node.gradle.plugin:3.0.1
 com.github.node-gradle:gradle-node-plugin:3.0.1
-com.google.cloud.tools:appengine-gradle-plugin:2.0.1
-com.google.cloud.tools:appengine-plugins-core:0.7.5
+com.google.cloud.tools:appengine-gradle-plugin:2.4.1
+com.google.cloud.tools:appengine-plugins-core:0.9.1
 com.google.code.findbugs:jsr305:3.0.2
-com.google.code.gson:gson:2.8.5
-com.google.errorprone:error_prone_annotations:2.2.0
-com.google.guava:failureaccess:1.0
-com.google.guava:guava:27.0-jre
+com.google.code.gson:gson:2.8.6
+com.google.errorprone:error_prone_annotations:2.3.4
+com.google.guava:failureaccess:1.0.1
+com.google.guava:guava:28.2-jre
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
-com.google.j2objc:j2objc-annotations:1.1
+com.google.j2objc:j2objc-annotations:1.3
 com.googlecode.concurrent-trees:concurrent-trees:2.6.1
 com.googlecode.javaewah:JavaEWAH:1.1.6
 com.jcraft:jsch:0.1.55
@@ -38,7 +38,7 @@ net.ltgt.errorprone:net.ltgt.errorprone.gradle.plugin:0.6.1
 net.ltgt.gradle:gradle-errorprone-plugin:0.6.1
 org.apache.ant:ant-launcher:1.9.7
 org.apache.ant:ant:1.9.7
-org.apache.commons:commons-compress:1.18
+org.apache.commons:commons-compress:1.20
 org.apache.commons:commons-lang3:3.8.1
 org.apache.logging.log4j:log4j-api:2.11.0
 org.apache.logging.log4j:log4j-core:2.11.0
@@ -49,12 +49,11 @@ org.apache.maven:maven-model:3.6.2
 org.bouncycastle:bcpg-jdk15on:1.61
 org.bouncycastle:bcpkix-jdk15on:1.61
 org.bouncycastle:bcprov-jdk15on:1.61
-org.checkerframework:checker-qual:2.5.2
+org.checkerframework:checker-qual:2.10.0
 org.codehaus.gpars:gpars:1.2.1
 org.codehaus.groovy:groovy-xml:2.4.7
 org.codehaus.groovy:groovy:2.4.7
 org.codehaus.jsr166-mirror:jsr166y:1.7.0
-org.codehaus.mojo:animal-sniffer-annotations:1.17
 org.codehaus.plexus:plexus-interpolation:1.25
 org.codehaus.plexus:plexus-utils:3.2.1
 org.eclipse.jgit:org.eclipse.jgit:5.5.0.201909110433-r