diff --git a/game/build.gradle b/game/build.gradle
index ac4d3f1c..1a451eb9 100644
--- a/game/build.gradle
+++ b/game/build.gradle
@@ -28,7 +28,7 @@ dependencies {
 
     testImplementation group: 'junit', name: 'junit', version: junitVersion
     testImplementation group: 'org.powermock', name: 'powermock-module-junit4', version: powermockVersion
-    testImplementation group: 'org.powermock', name: 'powermock-api-mockito', version: powermockVersion
+    testImplementation group: 'org.powermock', name: 'powermock-api-mockito2', version: powermockVersion
     testImplementation group: 'org.assertj', name: 'assertj-core', version: assertjVersion
 
     project(":game:plugin").subprojects { pluginProject ->
diff --git a/game/plugin-detekt-rules/build.gradle b/game/plugin-detekt-rules/build.gradle
index a57e036c..2a459bb6 100644
--- a/game/plugin-detekt-rules/build.gradle
+++ b/game/plugin-detekt-rules/build.gradle
@@ -4,6 +4,7 @@ apply from: "$rootDir/gradle/kotlin.gradle"
 
 dependencies {
     api group: 'io.gitlab.arturbosch.detekt', name: 'detekt-api', version: detektVersion
+    api group: 'org.jetbrains.kotlin', name: 'kotlin-stdlib-jdk8'
 
     test.useJUnitPlatform()
     testImplementation("org.junit.jupiter:junit-jupiter-api:${junitJupiterVersion}")
diff --git a/gradle/properties.gradle b/gradle/properties.gradle
index 76f3789d..63d32988 100644
--- a/gradle/properties.gradle
+++ b/gradle/properties.gradle
@@ -2,7 +2,7 @@ ext {
     kotlinVersion = '1.3.40'
     kotlinxCoroutinesVersion = '1.3.0-M2'
     junitVersion = '4.12'
-    powermockVersion = '1.6.4'
+    powermockVersion = '2.0.2'
     bouncycastleVersion = '1.54'
     c3p0Version = '0.9.5.2'
     scryptVersion = '1.4.0'
diff --git a/gradle/testing.gradle b/gradle/testing.gradle
index 838454d4..5b3a7cd1 100644
--- a/gradle/testing.gradle
+++ b/gradle/testing.gradle
@@ -10,7 +10,7 @@ gradle.projectsEvaluated {
         apply plugin: "jacoco"
 
         jacoco {
-            toolVersion = '0.8.1'
+            toolVersion = '0.8.4'
         }
 
         test {
diff --git a/gradle/wrapper.gradle b/gradle/wrapper.gradle
index 35e4d7dd..19b869f7 100644
--- a/gradle/wrapper.gradle
+++ b/gradle/wrapper.gradle
@@ -1,3 +1,3 @@
 wrapper {
-    gradleVersion = "4.9"
+    gradleVersion = "5.5"
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a95009c3..ce16fd39 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,6 @@
+#Tue Jul 16 03:37:52 BST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5-all.zip
diff --git a/net/build.gradle b/net/build.gradle
index 939c6ff4..0b1045c3 100644
--- a/net/build.gradle
+++ b/net/build.gradle
@@ -11,6 +11,7 @@ dependencies {
     implementation group: 'org.bouncycastle', name: 'bcprov-jdk15on', version: bouncycastleVersion
 
     test.useJUnitPlatform()
+    testImplementation group: 'junit', name: 'junit', version: junitVersion
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: junitJupiterVersion
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: junitJupiterVersion
     testImplementation group: 'org.junit.vintage', name: 'junit-vintage-engine', version: junitVintageVersion
diff --git a/util/build.gradle b/util/build.gradle
index 99694627..aa4fb376 100644
--- a/util/build.gradle
+++ b/util/build.gradle
@@ -10,6 +10,7 @@ dependencies {
     implementation group: 'org.bouncycastle', name: 'bcprov-jdk15on', version: bouncycastleVersion
 
     test.useJUnitPlatform()
+    testImplementation group: 'junit', name: 'junit', version: junitVersion
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: junitJupiterVersion
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: junitJupiterVersion
     testImplementation group: 'org.junit.vintage', name: 'junit-vintage-engine', version: junitVintageVersion