diff --git a/build.gradle b/build.gradle
index e6c99c567..b58cbd109 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,15 +1,9 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.0.1'
     }
 }
-
-allprojects {
-    repositories {
-        jcenter()
-        google()
-    }
-}
diff --git a/core/build.gradle b/core/build.gradle
index 2c8b3f144..82c7f04fe 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -23,5 +23,5 @@ android {
 }
 
 dependencies {
-    compile project(':SPD-classes')
+    implementation project(':SPD-classes')
 }
diff --git a/gradle.properties b/gradle.properties
deleted file mode 100644
index 635745af9..000000000
--- a/gradle.properties
+++ /dev/null
@@ -1,3 +0,0 @@
-org.gradle.daemon=true
-org.gradle.jvmargs=-Xms128m -Xmx2g
-org.gradle.configureondemand=true
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 590f0e81d..8941bfbbe 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.5.1-all.zip