diff --git a/brut.apktool/apktool-cli/build.gradle b/brut.apktool/apktool-cli/build.gradle
index 60106618..e2bee13e 100644
--- a/brut.apktool/apktool-cli/build.gradle
+++ b/brut.apktool/apktool-cli/build.gradle
@@ -41,10 +41,7 @@ task cleanOutputDirectory(type: Delete) {
 }
 
 task proguard(type: proguard.gradle.ProGuardTask, dependsOn: shadowJar) {
-    def outFile = jar.destinationDir.getPath() + '/' + "apktool" + '-' + project.apktool_version + '-small' + '.' + jar.extension
-
     injars shadowJar.archivePath
-    outjars outFile
 
     libraryjars "${System.properties['java.home']}/lib/rt.jar"
 
@@ -58,6 +55,9 @@ task proguard(type: proguard.gradle.ProGuardTask, dependsOn: shadowJar) {
     dontwarn 'com.google.common.util.**'
     dontwarn 'javax.xml.xpath.**'
     dontnote '**'
+
+    def outFile = jar.destinationDir.getPath() + '/' + "apktool" + '-' + project.apktool_version + '-small' + '.' + jar.extension
+    outjars outFile
 }
 
 proguard.dependsOn cleanOutputDirectory
diff --git a/build.gradle b/build.gradle
index ca00563d..d09780f9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,7 +21,7 @@ buildscript {
         options.encoding = "UTF-8"
     }
     dependencies {
-        classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.4'
+        classpath 'com.github.jengelman.gradle.plugins:shadow:5.0.0'
     }
 }
 
@@ -113,7 +113,7 @@ subprojects {
                 commons_lang: 'org.apache.commons:commons-lang3:3.1',
                 guava: 'com.google.guava:guava:14.0',
                 junit: 'junit:junit:4.12',
-                proguard_gradle: 'net.sf.proguard:proguard-gradle:6.0.3',
+                proguard_gradle: 'net.sf.proguard:proguard-gradle:6.1.0',
                 snakeyaml: 'org.yaml:snakeyaml:1.18:android',
                 smali: 'org.smali:smali:2.2.7',
                 xmlpull: 'xpp3:xpp3:1.1.4c',
@@ -133,6 +133,6 @@ subprojects {
 }
 
 wrapper {
-    gradleVersion = '4.10'
+    gradleVersion = '5.4.1'
     distributionType = Wrapper.DistributionType.ALL
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 29953ea1..5c2d1cf0 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index d76b502e..ee69dd68 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index cccdd3d5..b0d6d0ab 100755
--- a/gradlew
+++ b/gradlew
@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,7 +44,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
diff --git a/gradlew.bat b/gradlew.bat
index e95643d6..15e1ee37 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      http://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -14,7 +30,7 @@ set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome