diff --git a/build.gradle b/build.gradle
index dac933d0..7c27a192 100644
--- a/build.gradle
+++ b/build.gradle
@@ -50,8 +50,9 @@ task clean(type: Delete) {
 
 tasks {
     wrapper {
-        gradleVersion = "6.3"
+        gradleVersion = "6.4"
         distributionType = Wrapper.DistributionType.ALL
+        distributionSha256Sum = "d08f7e24d061910382c2fda9915e6ed42dd1480ae2e99211f92c70190cb697e0"
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 490fda85..62d4c053 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 6623300b..d3ffac12 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip
+distributionSha256Sum=d08f7e24d061910382c2fda9915e6ed42dd1480ae2e99211f92c70190cb697e0
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.4-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 2fe81a7d..fbd7c515 100755
--- a/gradlew
+++ b/gradlew
@@ -82,6 +82,7 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -129,6 +130,7 @@ fi
 if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath