diff --git a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache
index 911a9b137c98..619e826e194b 100644
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache
@@ -9,8 +9,8 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.+'
-        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
+        classpath 'com.android.tools.build:gradle:2.3.+'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
     }
 }
 
@@ -21,76 +21,76 @@ repositories {
 
 if(hasProperty('target') && target == 'android') {
 
-	apply plugin: 'com.android.library'
-	apply plugin: 'com.github.dcendents.android-maven'
+    apply plugin: 'com.android.library'
+    apply plugin: 'com.github.dcendents.android-maven'
 
-	android {
-	    compileSdkVersion 23
-	    buildToolsVersion '23.0.2'
-	    defaultConfig {
-	        minSdkVersion 14
-	        targetSdkVersion 23
-	    }
-	    compileOptions {
-	        sourceCompatibility JavaVersion.VERSION_1_7
-	        targetCompatibility JavaVersion.VERSION_1_7
-	    }
+    android {
+        compileSdkVersion 25
+        buildToolsVersion '25.0.2'
+        defaultConfig {
+            minSdkVersion 14
+            targetSdkVersion 25
+        }
+        compileOptions {
+            sourceCompatibility JavaVersion.VERSION_1_7
+            targetCompatibility JavaVersion.VERSION_1_7
+        }
 
-	    // Rename the aar correctly
-	    libraryVariants.all { variant ->
-	        variant.outputs.each { output ->
-	            def outputFile = output.outputFile
-	            if (outputFile != null && outputFile.name.endsWith('.aar')) {
-	                def fileName = "${project.name}-${variant.baseName}-${version}.aar"
-	                output.outputFile = new File(outputFile.parent, fileName)
-	            }
-	        }
-	    }
+        // Rename the aar correctly
+        libraryVariants.all { variant ->
+            variant.outputs.each { output ->
+                def outputFile = output.outputFile
+                if (outputFile != null && outputFile.name.endsWith('.aar')) {
+                    def fileName = "${project.name}-${variant.baseName}-${version}.aar"
+                    output.outputFile = new File(outputFile.parent, fileName)
+                }
+            }
+        }
 
       dependencies {
           provided 'javax.annotation:jsr250-api:1.0'
       }
-	}
+    }
 
-	afterEvaluate {
-	    android.libraryVariants.all { variant ->
-	        def task = project.tasks.create "jar${variant.name.capitalize()}", Jar
-	        task.description = "Create jar artifact for ${variant.name}"
-	        task.dependsOn variant.javaCompile
-	        task.from variant.javaCompile.destinationDir
-	        task.destinationDir = project.file("${project.buildDir}/outputs/jar")
-	        task.archiveName = "${project.name}-${variant.baseName}-${version}.jar"
-	        artifacts.add('archives', task);
-	    }
-	}
+    afterEvaluate {
+        android.libraryVariants.all { variant ->
+            def task = project.tasks.create "jar${variant.name.capitalize()}", Jar
+            task.description = "Create jar artifact for ${variant.name}"
+            task.dependsOn variant.javaCompile
+            task.from variant.javaCompile.destinationDir
+            task.destinationDir = project.file("${project.buildDir}/outputs/jar")
+            task.archiveName = "${project.name}-${variant.baseName}-${version}.jar"
+            artifacts.add('archives', task);
+        }
+    }
 
-	task sourcesJar(type: Jar) {
-	    from android.sourceSets.main.java.srcDirs
-	    classifier = 'sources'
-	}
+    task sourcesJar(type: Jar) {
+        from android.sourceSets.main.java.srcDirs
+        classifier = 'sources'
+    }
 
-	artifacts {
-	    archives sourcesJar
-	}
+    artifacts {
+        archives sourcesJar
+    }
 
 } else {
 
-	apply plugin: 'java'
-	apply plugin: 'maven'
+    apply plugin: 'java'
+    apply plugin: 'maven'
 
     sourceCompatibility = JavaVersion.VERSION_{{^java8}}1_7{{/java8}}{{#java8}}1_8{{/java8}}
     targetCompatibility = JavaVersion.VERSION_{{^java8}}1_7{{/java8}}{{#java8}}1_8{{/java8}}
 
-	install {
-	    repositories.mavenInstaller {
-	        pom.artifactId = '{{artifactId}}'
-	    }
-	}
+    install {
+        repositories.mavenInstaller {
+            pom.artifactId = '{{artifactId}}'
+        }
+    }
 
-	task execute(type:JavaExec) {
-	   main = System.getProperty('mainClass')
-	   classpath = sourceSets.main.runtimeClasspath
-	}
+    task execute(type:JavaExec) {
+       main = System.getProperty('mainClass')
+       classpath = sourceSets.main.runtimeClasspath
+    }
 }
 
 ext {