Upgrade documentation dependencies
diff --git a/winegrower-documentation/pom.xml b/winegrower-documentation/pom.xml
index 3280fcc..97e56b9 100644
--- a/winegrower-documentation/pom.xml
+++ b/winegrower-documentation/pom.xml
@@ -32,7 +32,7 @@
 
   <properties>
     <documentation.theme.url>scm:git:https://github.com/apache/karaf-decanter.git</documentation.theme.url>
-    <groovy.version>2.5.3</groovy.version>
+    <groovy.version>3.0.2</groovy.version>
   </properties>
 
   <build>
@@ -86,12 +86,12 @@
           <dependency>
             <groupId>org.asciidoctor</groupId>
             <artifactId>asciidoctorj</artifactId>
-            <version>1.5.7</version>
+            <version>2.2.0</version>
           </dependency>
           <dependency>
             <groupId>org.eclipse.jgit</groupId>
             <artifactId>org.eclipse.jgit</artifactId>
-            <version>4.9.2.201712150930-r</version>
+            <version>5.7.0.202003110725-r</version>
           </dependency>
         </dependencies>
       </plugin>