diff --git a/core-deterministic/build.gradle b/core-deterministic/build.gradle
index 5bf7b7afc2..de7c5d9a4d 100644
--- a/core-deterministic/build.gradle
+++ b/core-deterministic/build.gradle
@@ -1,10 +1,17 @@
-description 'Corda core (deterministic)'
+import net.corda.gradle.jarfilter.JarFilterTask
+import net.corda.gradle.jarfilter.MetaFixerTask
+import proguard.gradle.ProGuardTask
+import static org.gradle.api.JavaVersion.VERSION_1_8
 
-apply from: '../deterministic.gradle'
-apply plugin: 'com.jfrog.artifactory'
-apply plugin: 'net.corda.plugins.publish-utils'
-apply plugin: 'java-library'
-apply plugin: 'idea'
+plugins {
+    id 'net.corda.plugins.publish-utils'
+    id 'com.jfrog.artifactory'
+    id 'java-library'
+    id 'idea'
+}
+apply from: "${rootProject.projectDir}/deterministic.gradle"
+
+description 'Corda core (deterministic)'
 
 evaluationDependsOn(":core")
 
@@ -39,7 +46,7 @@ dependencies {
     deterministicLibraries "net.i2p.crypto:eddsa:$eddsa_version"
 }
 
-jar {
+tasks.getByName('jar') {
     archiveBaseName = 'DOES-NOT-EXIST'
     // Don't build a jar here because it would be the wrong one.
     // The jar we really want will be built by the metafix task.
@@ -49,7 +56,8 @@ jar {
 def coreJarTask = tasks.getByPath(':core:jar')
 def originalJar = coreJarTask.outputs.files.singleFile
 
-task patchCore(type: Zip, dependsOn: coreJarTask) {
+def patchCore = tasks.register('patchCore', Zip) {
+    dependsOn coreJarTask
     destinationDirectory = file("$buildDir/source-libs")
     metadataCharset 'UTF-8'
     archiveClassifier = 'transient'
@@ -70,8 +78,7 @@ task patchCore(type: Zip, dependsOn: coreJarTask) {
     includeEmptyDirs = false
 }
 
-import proguard.gradle.ProGuardTask
-task predeterminise(type: ProGuardTask) {
+def predeterminise = tasks.register('predeterminise', ProGuardTask) {
     injars patchCore
     outjars file("$buildDir/proguard/pre-deterministic-${project.version}.jar")
 
@@ -104,8 +111,7 @@ task predeterminise(type: ProGuardTask) {
     keepclassmembers 'class net.corda.core.** { public synthetic <methods>; }'
 }
 
-import net.corda.gradle.jarfilter.JarFilterTask
-task jarFilter(type: JarFilterTask) {
+def jarFilter = tasks.register('jarFilter', JarFilterTask) {
     jars predeterminise
     annotations {
         forDelete = [
@@ -158,9 +164,6 @@ task determinise(type: ProGuardTask) {
     keepclassmembers 'class net.corda.core.** { public synthetic <methods>; }'
 }
 
-import net.corda.gradle.jarfilter.MetaFixerTask
-import static org.gradle.api.JavaVersion.VERSION_1_8
-
 task metafix(type: MetaFixerTask) {
     outputDir file("$buildDir/libs")
     jars determinise
@@ -171,7 +174,8 @@ task metafix(type: MetaFixerTask) {
 }
 
 // DOCSTART 01
-task checkDeterminism(type: ProGuardTask, dependsOn: jdkTask) {
+def checkDeterminism = tasks.register('checkDeterminism', ProGuardTask) {
+    dependsOn jdkTask
     injars metafix
 
     libraryjars deterministic_rt_jar
diff --git a/core-deterministic/testing/build.gradle b/core-deterministic/testing/build.gradle
index 2dcc5ea415..b56b4e7615 100644
--- a/core-deterministic/testing/build.gradle
+++ b/core-deterministic/testing/build.gradle
@@ -1,25 +1,29 @@
-apply plugin: 'kotlin'
+plugins {
+    id 'org.jetbrains.kotlin.jvm'
+}
 
 dependencies {
-    testCompile project(path: ':core-deterministic', configuration: 'deterministicArtifacts')
-    testCompile project(path: ':serialization-deterministic', configuration: 'deterministicArtifacts')
-    testCompile project(path: ':core-deterministic:testing:verifier', configuration: 'deterministicArtifacts')
-    testCompile project(path: ':core-deterministic:testing:data', configuration: 'testData')
-    testCompile(project(':finance:contracts')) {
+    testImplementation project(path: ':core-deterministic', configuration: 'deterministicArtifacts')
+    testImplementation project(path: ':serialization-deterministic', configuration: 'deterministicArtifacts')
+    testImplementation project(path: ':core-deterministic:testing:verifier', configuration: 'deterministicArtifacts')
+    testImplementation project(path: ':core-deterministic:testing:data', configuration: 'testData')
+    testImplementation(project(':finance:contracts')) {
         transitive = false
     }
-    testCompile(project(':finance:workflows')) {
+    testImplementation(project(':finance:workflows')) {
         transitive = false
     }
 
     testImplementation "org.slf4j:slf4j-api:$slf4j_version"
     testRuntimeOnly "org.apache.logging.log4j:log4j-slf4j-impl:$log4j_version"
-    testCompile "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
-    testCompile "org.assertj:assertj-core:$assertj_version"
+    testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
+    testImplementation "org.assertj:assertj-core:$assertj_version"
     testImplementation "junit:junit:$junit_version"
     testRuntimeOnly "org.junit.vintage:junit-vintage-engine:${junit_vintage_version}"
     testRuntimeOnly "org.junit.platform:junit-platform-launcher:${junit_platform_version}"
 }
 
 // This module has no artifact and only contains tests.
-jar.enabled = false
+tasks.getByName('jar') {
+    enabled = false
+}
diff --git a/core-deterministic/testing/data/build.gradle b/core-deterministic/testing/data/build.gradle
index a8525056e3..d4f6ca3bbe 100644
--- a/core-deterministic/testing/data/build.gradle
+++ b/core-deterministic/testing/data/build.gradle
@@ -1,17 +1,19 @@
-apply plugin: 'kotlin'
+plugins {
+    id 'org.jetbrains.kotlin.jvm'
+}
 
 configurations {
     testData
 }
 
 dependencies {
-    testCompile project(':core')
-    testCompile project(':finance:workflows')
-    testCompile project(':node-driver')
-    testCompile project(path: ':core-deterministic:testing:verifier', configuration: 'runtimeArtifacts')
+    testImplementation project(':core')
+    testImplementation project(':finance:workflows')
+    testImplementation project(':node-driver')
+    testImplementation project(path: ':core-deterministic:testing:verifier', configuration: 'runtimeArtifacts')
 
-    testCompile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    testCompile "org.jetbrains.kotlin:kotlin-reflect"
+    testImplementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    testImplementation "org.jetbrains.kotlin:kotlin-reflect"
 
     testImplementation "junit:junit:$junit_version"
 
@@ -19,7 +21,9 @@ dependencies {
     testRuntimeOnly "org.junit.platform:junit-platform-launcher:${junit_platform_version}"
 }
 
-jar.enabled = false
+tasks.getByName('jar') {
+    enabled = false
+}
 
 test {
     ext {
diff --git a/core-deterministic/testing/verifier/build.gradle b/core-deterministic/testing/verifier/build.gradle
index 51727d2d3e..774592c6a4 100644
--- a/core-deterministic/testing/verifier/build.gradle
+++ b/core-deterministic/testing/verifier/build.gradle
@@ -1,8 +1,10 @@
-apply plugin: 'java-library'
-apply from: '../../../deterministic.gradle'
-apply plugin: 'net.corda.plugins.publish-utils'
-apply plugin: 'com.jfrog.artifactory'
-apply plugin: 'idea'
+plugins {
+    id 'java-library'
+    id 'net.corda.plugins.publish-utils'
+    id 'com.jfrog.artifactory'
+    id 'idea'
+}
+apply from: "${rootProject.projectDir}/deterministic.gradle"
 
 description 'Test utilities for deterministic contract verification'
 
diff --git a/serialization-deterministic/build.gradle b/serialization-deterministic/build.gradle
index 8bd7dc47a2..0b25629076 100644
--- a/serialization-deterministic/build.gradle
+++ b/serialization-deterministic/build.gradle
@@ -1,12 +1,17 @@
+import net.corda.gradle.jarfilter.JarFilterTask
+import net.corda.gradle.jarfilter.MetaFixerTask
+import proguard.gradle.ProGuardTask
 import static org.gradle.api.JavaVersion.VERSION_1_8
 
-description 'Corda serialization (deterministic)'
+plugins {
+    id 'net.corda.plugins.publish-utils'
+    id 'com.jfrog.artifactory'
+    id 'java-library'
+    id 'idea'
+}
+apply from: "${rootProject.projectDir}/deterministic.gradle"
 
-apply from: '../deterministic.gradle'
-apply plugin: 'com.jfrog.artifactory'
-apply plugin: 'net.corda.plugins.publish-utils'
-apply plugin: 'java-library'
-apply plugin: 'idea'
+description 'Corda serialization (deterministic)'
 
 evaluationDependsOn(":serialization")
 
@@ -37,7 +42,7 @@ dependencies {
     implementation "com.google.guava:guava:$guava_version"
 }
 
-jar {
+tasks.getByName('jar') {
     archiveBaseName = 'DOES-NOT-EXIST'
     // Don't build a jar here because it would be the wrong one.
     // The jar we really want will be built by the metafix task.
@@ -47,7 +52,8 @@ jar {
 def serializationJarTask = tasks.getByPath(':serialization:jar')
 def originalJar = serializationJarTask.outputs.files.singleFile
 
-task patchSerialization(type: Zip, dependsOn: serializationJarTask) {
+def patchSerialization = tasks.register('patchSerialization', Zip) {
+    dependsOn serializationJarTask
     destinationDirectory = file("$buildDir/source-libs")
     metadataCharset 'UTF-8'
     archiveClassifier = 'transient'
@@ -69,8 +75,8 @@ task patchSerialization(type: Zip, dependsOn: serializationJarTask) {
     includeEmptyDirs = false
 }
 
-import proguard.gradle.ProGuardTask
-task predeterminise(type: ProGuardTask, dependsOn: project(':core-deterministic').assemble) {
+def predeterminise = tasks.register('predeterminise', ProGuardTask) {
+    dependsOn project(':core-deterministic').assemble
     injars patchSerialization
     outjars file("$buildDir/proguard/pre-deterministic-${project.version}.jar")
 
@@ -100,8 +106,7 @@ task predeterminise(type: ProGuardTask, dependsOn: project(':core-deterministic'
     keepclassmembers 'class net.corda.serialization.** { public synthetic <methods>; }'
 }
 
-import net.corda.gradle.jarfilter.JarFilterTask
-task jarFilter(type: JarFilterTask) {
+def jarFilter = tasks.register('jarFilter', JarFilterTask) {
     jars predeterminise
     annotations {
         forDelete = [
@@ -148,7 +153,6 @@ task determinise(type: ProGuardTask) {
     keepclassmembers 'class net.corda.serialization.** { public synthetic <methods>; }'
 }
 
-import net.corda.gradle.jarfilter.MetaFixerTask
 task metafix(type: MetaFixerTask) {
     outputDir file("$buildDir/libs")
     jars determinise
@@ -158,7 +162,8 @@ task metafix(type: MetaFixerTask) {
     preserveTimestamps = false
 }
 
-task checkDeterminism(type: ProGuardTask, dependsOn: jdkTask) {
+def checkDeterminism = tasks.register('checkDeterminism', ProGuardTask) {
+    dependsOn jdkTask
     injars metafix
 
     libraryjars deterministic_rt_jar
diff --git a/serialization-djvm/deserializers/build.gradle b/serialization-djvm/deserializers/build.gradle
index 8c19a9c351..9c1b211150 100644
--- a/serialization-djvm/deserializers/build.gradle
+++ b/serialization-djvm/deserializers/build.gradle
@@ -5,7 +5,7 @@ plugins {
     id 'java-library'
     id 'idea'
 }
-apply from: '../../deterministic.gradle'
+apply from: "${rootProject.projectDir}/deterministic.gradle"
 
 description 'Deserializers for the DJVM'
 
@@ -31,5 +31,9 @@ idea {
     module {
         downloadJavadoc = true
         downloadSources = true
+
+        if (project.hasProperty("deterministic_idea_sdk")) {
+            jdkName project.property("deterministic_idea_sdk") as String
+        }
     }
 }