diff --git a/build.gradle b/build.gradle
index 1aa3af9e..6283b4ec 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,7 +28,7 @@ ext {
     date = git.head().date.format("yy.MM.dd")
     revision = "-${git.head().abbreviatedId}"
     parents = git.head().parentIds;
-    index = -75;  // Offset to mach CI
+    index = -76;  // Offset to mach CI
     int major, minor, patch;
     major = minor = patch = 0;
     for (;parents != null && !parents.isEmpty();index++) {
diff --git a/forge110/build.gradle b/forge110/build.gradle
index 157620f4..4376197b 100644
--- a/forge110/build.gradle
+++ b/forge110/build.gradle
@@ -21,6 +21,9 @@ dependencies {
     compile 'com.sk89q.worldedit:worldedit-forge-mc1.8.9:6.1.1'
 }
 
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
 repositories {
     maven {
         name = 'forge'
diff --git a/forge111/build.gradle b/forge111/build.gradle
index 328e7c58..db87e419 100644
--- a/forge111/build.gradle
+++ b/forge111/build.gradle
@@ -21,6 +21,9 @@ dependencies {
     compile 'com.sk89q.worldedit:worldedit-forge-mc1.8.9:6.1.1'
 }
 
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
 repositories {
     maven {
         name = 'forge'
diff --git a/forge1710/build.gradle b/forge1710/build.gradle
index caf8f53a..ab68272b 100644
--- a/forge1710/build.gradle
+++ b/forge1710/build.gradle
@@ -21,6 +21,9 @@ dependencies {
     compile 'net.minecraftforge.gradle:ForgeGradle:1.2-SNAPSHOT'
 }
 
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
 repositories {
     maven {
         name = 'forge'
diff --git a/forge189/build.gradle b/forge189/build.gradle
index b9b68b25..0d99fdcc 100644
--- a/forge189/build.gradle
+++ b/forge189/build.gradle
@@ -21,6 +21,9 @@ dependencies {
     compile 'com.sk89q.worldedit:worldedit-forge-mc1.8.9:6.1.1'
 }
 
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
 repositories {
     maven {
         name = 'forge'
diff --git a/forge194/build.gradle b/forge194/build.gradle
index 4bfbc6cf..045233e2 100644
--- a/forge194/build.gradle
+++ b/forge194/build.gradle
@@ -20,6 +20,9 @@ dependencies {
     compile 'com.sk89q.worldedit:worldedit-forge-mc1.8.9:6.1.1'
 }
 
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
 repositories {
     maven {
         name = 'forge'
diff --git a/sponge/build.gradle b/sponge/build.gradle
index fc37ab46..10928921 100644
--- a/sponge/build.gradle
+++ b/sponge/build.gradle
@@ -28,6 +28,9 @@ plugins {
 apply plugin: 'net.minecrell.vanilla.server.library'
 apply plugin: 'com.github.johnrengelman.shadow'
 
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
 repositories {
     flatDir {dirs 'lib'}
     maven {