diff --git a/build.gradle b/build.gradle
index 5e94987..17f71a9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -70,7 +70,7 @@ subprojects {
 		
 	// dependencies that all sub-projects have 
 	dependencies {
-		testCompile 'org.junit.jupiter:junit-jupiter-api:5.7.0'
+		testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
     	testRuntime 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
     	testRuntime 'org.junit.platform:junit-platform-launcher:1.7.0' // needed by eclipse
 	}
@@ -88,5 +88,5 @@ subprojects {
 }
 
 wrapper {
-	gradleVersion = '6.7'
+	gradleVersion = '6.8.3'
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index be52383..442d913 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists