diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
index 6c8c0e0..a3f9f18 100644
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.6.0/apache-maven-3.6.0-bin.zip
diff --git a/build.gradle b/build.gradle
index 5fc72b6..e5a24a8 100755
--- a/build.gradle
+++ b/build.gradle
@@ -10,7 +10,7 @@ repositories {
   // Spock releases are available from Maven Central
   mavenCentral()
   // Spock snapshots are available from the Sonatype OSS snapshot repository
-  maven { url "http://oss.sonatype.org/content/repositories/snapshots/" }
+  maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
 }
 
 dependencies {
diff --git a/build.xml b/build.xml
index a6956c8..230a25e 100644
--- a/build.xml
+++ b/build.xml
@@ -4,7 +4,7 @@
   <property name="build.dir" location="ant/build" />
   <property name="lib.dir" location="ant/lib" />
 
-  <property name="maven.ant.tasks.url" value="http://central.maven.org/maven2/org/apache/maven/maven-ant-tasks/2.1.3/maven-ant-tasks-2.1.3.jar" />
+  <property name="maven.ant.tasks.url" value="https://central.maven.org/maven2/org/apache/maven/maven-ant-tasks/2.1.3/maven-ant-tasks-2.1.3.jar" />
   <property name="maven.ant.tasks.jar" value="${lib.dir}${file.separator}maven-ant-tasks-2.1.3.jar" />
   <available property="maven.ant.tasks.jar.exists" file="${maven.ant.tasks.jar}" />
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b1891b1..7c23a8a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,5 +3,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionSha256Sum=248cfd92104ce12c5431ddb8309cf713fe58de8e330c63176543320022f59f18
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10-bin.zip
+distributionSha256Sum=748c33ff8d216736723be4037085b8dc342c6a0f309081acf682c9803e407357
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip