diff --git a/fabric-chaincode-protos/build.gradle b/fabric-chaincode-protos/build.gradle
index 737e0825..770e121a 100644
--- a/fabric-chaincode-protos/build.gradle
+++ b/fabric-chaincode-protos/build.gradle
@@ -47,9 +47,9 @@ buildscript {
 dependencies {
     compile 'com.google.protobuf:protobuf-java:3.11.1'
     compile 'com.google.protobuf:protobuf-java-util:3.11.1'
-    compile 'io.grpc:grpc-netty:1.25.0'
-    compile 'io.grpc:grpc-protobuf:1.25.0'
-    compile 'io.grpc:grpc-stub:1.25.0'
+    compile 'io.grpc:grpc-netty:1.30.2'
+    compile 'io.grpc:grpc-protobuf:1.30.2'
+    compile 'io.grpc:grpc-stub:1.30.2'
     // Required if using Java 11+ as no longer bundled in the core libraries
     compile 'javax.annotation:javax.annotation-api:1.3.2'
 }
diff --git a/fabric-chaincode-shim/build.gradle b/fabric-chaincode-shim/build.gradle
index 45f2effa..ddda03ce 100644
--- a/fabric-chaincode-shim/build.gradle
+++ b/fabric-chaincode-shim/build.gradle
@@ -8,7 +8,7 @@
         mavenCentral()
     }
     dependencies {
-        classpath 'org.owasp:dependency-check-gradle:5.2.1'
+        classpath 'org.owasp:dependency-check-gradle:5.3.2'
     }
 }
 
@@ -24,7 +24,7 @@ apply plugin: 'org.owasp.dependencycheck'
 
 
 checkstyle {
-    toolVersion '8.27'
+    toolVersion '8.29'
     configFile file("../ci/checkstyle/checkstyle.xml")
     configProperties = [config_loc: file("../ci/checkstyle") ]
 }
@@ -49,7 +49,7 @@ dependencies {
     compile 'org.bouncycastle:bcpkix-jdk15on:1.62'
     compile 'org.bouncycastle:bcprov-jdk15on:1.62'
     compile group: 'io.github.classgraph', name: 'classgraph', version: '4.8.47'
-    compile 'com.github.everit-org.json-schema:org.everit.json.schema:1.11.1'
+    compile 'com.github.everit-org.json-schema:org.everit.json.schema:1.12.1'
     compile group: 'org.json', name: 'json', version: '20180813'
     // Required if using Java 11+ as no longer bundled in the core libraries
     testCompile group: 'javax.xml.bind', name: 'jaxb-api', version: '2.3.1'