diff --git a/build.gradle b/build.gradle
index 6982dc8..48ef4b7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,12 +1,9 @@
 buildscript {
-    ext {
-        springBootVersion = '2.1.0.RELEASE'
-    }
     repositories {
         mavenCentral()
     }
     dependencies {
-        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.1.0.RELEASE")
     }
 }
 
@@ -14,7 +11,6 @@
     id 'java'
     id 'org.springframework.boot' version '2.1.0.RELEASE'
     id 'io.spring.dependency-management' version '1.0.8.RELEASE'
-    id 'com.github.johnrengelman.shadow' version '5.0.0'
 }
 
 group = 'com.sample'