diff --git a/synapse-aws-auth/build.gradle b/synapse-aws-auth/build.gradle
index 3d984548..1cfd3214 100644
--- a/synapse-aws-auth/build.gradle
+++ b/synapse-aws-auth/build.gradle
@@ -3,7 +3,7 @@ apply plugin: 'java-library'
 dependencies {
     api project(':synapse-core:')
 
-    api "com.google.guava:guava:28.1-jre"
+    api "com.google.guava:guava:30.1-jre"
     api "software.amazon.awssdk:auth:${awsSdkVersion}"
     api "software.amazon.awssdk:core:${awsSdkVersion}"
     api "software.amazon.awssdk:profiles:${awsSdkVersion}"
diff --git a/synapse-aws-kinesis/build.gradle b/synapse-aws-kinesis/build.gradle
index 5ee2451c..b1e75909 100644
--- a/synapse-aws-kinesis/build.gradle
+++ b/synapse-aws-kinesis/build.gradle
@@ -4,7 +4,7 @@ dependencies {
     api project(':synapse-core:')
     api project(':synapse-aws-auth:')
 
-    implementation "com.google.guava:guava:28.1-jre"
+    implementation "com.google.guava:guava:30.1-jre"
     implementation "software.amazon.awssdk:kinesis:${awsSdkVersion}"
     implementation "software.amazon.awssdk:netty-nio-client:${awsSdkVersion}"
     implementation "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.12.2"
diff --git a/synapse-aws-sqs/build.gradle b/synapse-aws-sqs/build.gradle
index 710aad7b..7fc923ec 100644
--- a/synapse-aws-sqs/build.gradle
+++ b/synapse-aws-sqs/build.gradle
@@ -4,7 +4,7 @@ dependencies {
     api project(':synapse-core:')
     api project(':synapse-aws-auth:')
 
-    implementation "com.google.guava:guava:28.1-jre"
+    implementation "com.google.guava:guava:30.1-jre"
     implementation "software.amazon.awssdk:sqs:${awsSdkVersion}"
 
     // Use JUnit test framework
diff --git a/synapse-compaction-aws-s3/build.gradle b/synapse-compaction-aws-s3/build.gradle
index 7ac6e781..7ee5947d 100644
--- a/synapse-compaction-aws-s3/build.gradle
+++ b/synapse-compaction-aws-s3/build.gradle
@@ -4,7 +4,7 @@ dependencies {
     api project(':synapse-core:')
     api project(':synapse-aws-auth:')
 
-    implementation "com.google.guava:guava:28.1-jre"
+    implementation "com.google.guava:guava:30.1-jre"
     implementation "software.amazon.awssdk:s3:${awsSdkVersion}"
     implementation "software.amazon.awssdk:netty-nio-client:${awsSdkVersion}"
 
diff --git a/synapse-core/build.gradle b/synapse-core/build.gradle
index dea59205..93112863 100644
--- a/synapse-core/build.gradle
+++ b/synapse-core/build.gradle
@@ -3,7 +3,7 @@ apply plugin: 'java-library'
 dependencies {
 
     // This dependency is exported to consumers, that is to say found on their compile classpath.
-    api 'com.google.guava:guava:28.1-jre'
+    api 'com.google.guava:guava:30.1-jre'
     api "org.springframework.boot:spring-boot:${springBootVersion}"
     api "org.springframework.boot:spring-boot-autoconfigure:${springBootVersion}"
 
diff --git a/synapse-kafka/build.gradle b/synapse-kafka/build.gradle
index 9b728074..93be4c0e 100644
--- a/synapse-kafka/build.gradle
+++ b/synapse-kafka/build.gradle
@@ -3,7 +3,7 @@ apply plugin: 'java-library'
 dependencies {
     api project(':synapse-core:')
 
-    implementation "com.google.guava:guava:28.1-jre"
+    implementation "com.google.guava:guava:30.1-jre"
     implementation "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.12.2"
     implementation "org.springframework.kafka:spring-kafka:2.6.3"