Changing plugin versions
diff --git a/pom.xml b/pom.xml
index 815b871..9566406 100644
--- a/pom.xml
+++ b/pom.xml
@@ -745,7 +745,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-site-plugin</artifactId>
-          <version>3.6</version>
+          <version>3.7.1</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -763,7 +763,7 @@
         <plugin>
           <groupId>org.apache.rat</groupId>
           <artifactId>apache-rat-plugin</artifactId>
-          <version>0.12</version>
+          <version>0.11</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
@@ -773,7 +773,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-scm-publish-plugin</artifactId>
-          <version>1.1</version>
+          <version>3.0.0</version>
           <configuration>
             <checkoutDirectory>${scmPubCheckoutDirectory}</checkoutDirectory>
             <tryUpdate>${scmTryUpdate}</tryUpdate>