diff --git a/core/build.gradle b/core/build.gradle
index 8f9277c..04b1869 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -4,6 +4,6 @@ plugins {
 
 dependencies {
     compile 'com.moandjiezana.toml:toml4j:0.7.1'
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:1.1.3"
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:1.1.3"
     testCompile 'junit:junit:4.12'
 }