diff --git a/build.gradle b/build.gradle
index 64306256..225bfa0d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,7 +10,7 @@ buildscript {
     }
 }
 plugins {
-    id 'org.jetbrains.kotlin.jvm' version '1.4.0'
+    id 'org.jetbrains.kotlin.jvm' version '1.4.21'
 }
 
 def openrndrUseSnapshot = false
@@ -18,8 +18,8 @@ def openrndrUseSnapshot = false
 apply plugin: 'org.jetbrains.dokka'
 
 project.ext {
-    openrndrVersion = openrndrUseSnapshot? "0.4.0-SNAPSHOT" : "0.3.45-rc.6"
-    kotlinVersion = "1.4.0"
+    openrndrVersion = openrndrUseSnapshot? "0.4.0-SNAPSHOT" : "0.3.45-rc.8"
+    kotlinVersion = "1.4.21"
     spekVersion = "2.0.12"
     libfreenectVersion = "0.5.7-1.5.4"
     librealsense2Version = "2.29.0-1.5.4"
@@ -81,13 +81,13 @@ allprojects {
 
     dependencies {
         implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion"
-        implementation 'io.github.microutils:kotlin-logging:1.7.9'
+        implementation 'io.github.microutils:kotlin-logging-jvm:2.0.2'
         implementation "org.openrndr:openrndr-core:$openrndrVersion"
         implementation "org.openrndr:openrndr-filter:$openrndrVersion"
         implementation "org.openrndr:openrndr-shape:$openrndrVersion"
-        implementation group: 'org.jetbrains.kotlinx', name: 'kotlinx-coroutines-core', version: '1.3.9'
+        implementation group: 'org.jetbrains.kotlinx', name: 'kotlinx-coroutines-core', version: '1.4.2'
         testImplementation "org.spekframework.spek2:spek-dsl-jvm:$spekVersion"
-        testImplementation "org.amshove.kluent:kluent:1.61"
+        testImplementation "org.amshove.kluent:kluent:1.64"
         testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlinVersion"
         testRuntimeOnly "org.spekframework.spek2:spek-runner-junit5:$spekVersion"
         testRuntimeOnly "org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion"
@@ -98,7 +98,6 @@ allprojects {
         sourceCompatibility = JavaVersion.VERSION_1_8
         targetCompatibility = JavaVersion.VERSION_1_8
     }
-
     javadoc {
         options.addBooleanOption 'Xdoclint:none', true
     }
@@ -115,6 +114,11 @@ allprojects {
             includeEngines 'spek2'
         }
     }
+    tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
+        kotlinOptions {
+            jvmTarget = "1.8"
+        }
+    }
 }
 
 task buildMainReadme {