diff --git a/MineTweaker3-API/build.gradle b/MineTweaker3-API/build.gradle
index 42d5ae5..72e32d5 100644
--- a/MineTweaker3-API/build.gradle
+++ b/MineTweaker3-API/build.gradle
@@ -2,8 +2,8 @@ import minetweaker.tasks.RegisterZenClassesTask;
 
 apply plugin: 'java'
 
-sourceCompatibility = '1.6'
-targetCompatibility = '1.6'
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
 
 task makeRegistry(type: RegisterZenClassesTask) {
 	inputDir = file('build/classes/main')
diff --git a/MineTweaker3-MC1102-Main/build.gradle b/MineTweaker3-MC1102-Main/build.gradle
index e23f415..85debe0 100644
--- a/MineTweaker3-MC1102-Main/build.gradle
+++ b/MineTweaker3-MC1102-Main/build.gradle
@@ -14,6 +14,9 @@ buildscript {
 }
 apply plugin: 'net.minecraftforge.gradle.forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 version = "1.10.2-" + ext.mineTweakerVersion
 archivesBaseName = project.projectDir.name
 
diff --git a/MineTweaker3-MC1102-Mod-IC2/build.gradle b/MineTweaker3-MC1102-Mod-IC2/build.gradle
index 88d1cd0..a2d0091 100644
--- a/MineTweaker3-MC1102-Mod-IC2/build.gradle
+++ b/MineTweaker3-MC1102-Mod-IC2/build.gradle
@@ -19,6 +19,9 @@ buildscript {
 }
 apply plugin: 'net.minecraftforge.gradle.forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 version = "1.10.2-" + ext.mineTweakerVersion
 archivesBaseName = project.projectDir.name
 
diff --git a/MineTweaker3-MC1102-Mod-JEI/build.gradle b/MineTweaker3-MC1102-Mod-JEI/build.gradle
index 4b36d9e..e18a42b 100644
--- a/MineTweaker3-MC1102-Mod-JEI/build.gradle
+++ b/MineTweaker3-MC1102-Mod-JEI/build.gradle
@@ -19,6 +19,9 @@ buildscript {
 }
 apply plugin: 'net.minecraftforge.gradle.forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 version = "1.10.2-" + ext.mineTweakerVersion
 archivesBaseName = project.projectDir.name
 
diff --git a/MineTweaker3-MC1710-Main/build.gradle b/MineTweaker3-MC1710-Main/build.gradle
index 6d690e3..b6a7706 100644
--- a/MineTweaker3-MC1710-Main/build.gradle
+++ b/MineTweaker3-MC1710-Main/build.gradle
@@ -19,9 +19,14 @@ buildscript {
 
 apply plugin: 'forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 version = "1.7.10-" + ext.mineTweakerVersion
 archivesBaseName = project.projectDir.name
 
+
+
 minecraft {
 	version = forgeVersion1710
 }
diff --git a/MineTweaker3-MC1710-Mod-IC2/build.gradle b/MineTweaker3-MC1710-Mod-IC2/build.gradle
index 59ff741..1edd8d1 100644
--- a/MineTweaker3-MC1710-Mod-IC2/build.gradle
+++ b/MineTweaker3-MC1710-Mod-IC2/build.gradle
@@ -19,6 +19,9 @@ buildscript {
 
 apply plugin: 'forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 minecraft {
 	version = forgeVersion1710
 }
diff --git a/MineTweaker3-MC1710-Mod-MFR/build.gradle b/MineTweaker3-MC1710-Mod-MFR/build.gradle
index fc9033e..00c04bf 100644
--- a/MineTweaker3-MC1710-Mod-MFR/build.gradle
+++ b/MineTweaker3-MC1710-Mod-MFR/build.gradle
@@ -19,6 +19,9 @@ buildscript {
 
 apply plugin: 'forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 minecraft {
 	version = forgeVersion1710
 }
diff --git a/MineTweaker3-MC1710-Mod-NEI/build.gradle b/MineTweaker3-MC1710-Mod-NEI/build.gradle
index 5baac03..741ec01 100644
--- a/MineTweaker3-MC1710-Mod-NEI/build.gradle
+++ b/MineTweaker3-MC1710-Mod-NEI/build.gradle
@@ -19,6 +19,9 @@ buildscript {
 
 apply plugin: 'forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 minecraft {
 	version = forgeVersion1710
 }
diff --git a/MineTweaker3-MC18-Main/build.gradle b/MineTweaker3-MC18-Main/build.gradle
index b571e5c..06daa3a 100644
--- a/MineTweaker3-MC18-Main/build.gradle
+++ b/MineTweaker3-MC18-Main/build.gradle
@@ -14,6 +14,9 @@ buildscript {
 }
 apply plugin: 'net.minecraftforge.gradle.forge'
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 version = "1.8.9-" + ext.mineTweakerVersion
 archivesBaseName = project.projectDir.name
 
diff --git a/MineTweaker3-MC18-Mod-JEI/build.gradle b/MineTweaker3-MC18-Mod-JEI/build.gradle
index cafff73..18ee311 100644
--- a/MineTweaker3-MC18-Mod-JEI/build.gradle
+++ b/MineTweaker3-MC18-Mod-JEI/build.gradle
@@ -18,10 +18,13 @@ buildscript {
     }
 }
 apply plugin: 'net.minecraftforge.gradle.forge'
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
 
 version = "1.8.9-" + ext.mineTweakerVersion
 archivesBaseName = project.projectDir.name
 
+
 minecraft {
 	version = forgeVersion18
 	runDir = "eclipse"
diff --git a/ZenScript/build.gradle b/ZenScript/build.gradle
index dfaceec..471aa63 100644
--- a/ZenScript/build.gradle
+++ b/ZenScript/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'java'
 
-sourceCompatibility = '1.6'
-targetCompatibility = '1.6'
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
 
 dependencies {
 	compile 'org.ow2.asm:asm-debug-all:5.0.3'
diff --git a/build.gradle b/build.gradle
index 17e465e..51a7596 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,10 @@
 apply plugin: 'base' // To add "clean" task to the root project.
 apply from: 'configuration.gradle'
 apply plugin: "maven"
+
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 subprojects {
     apply from: rootProject.file('common.gradle')
 }