diff --git a/checkstyle.xml b/checkstyle.xml
index e90f63c34..45117c497 100644
--- a/checkstyle.xml
+++ b/checkstyle.xml
@@ -46,7 +46,7 @@
 
     <!-- Checks for Javadoc comments.                     -->
     <!-- See http://checkstyle.sf.net/config_javadoc.html -->
-    <module name="JavadocStyle"/>
+    <module name="SummaryJavadoc"/>
 
 
     <!-- Checks for Naming Conventions.                  -->
diff --git a/modules/cloudant/src/main/java/com/ibm/cloud/cloudant/features/ChangesFollower.java b/modules/cloudant/src/main/java/com/ibm/cloud/cloudant/features/ChangesFollower.java
index ec4fe1601..c3b4a5367 100644
--- a/modules/cloudant/src/main/java/com/ibm/cloud/cloudant/features/ChangesFollower.java
+++ b/modules/cloudant/src/main/java/com/ibm/cloud/cloudant/features/ChangesFollower.java
@@ -220,6 +220,7 @@ public synchronized void stop() throws IllegalStateException {
     }
 
     /**
+     * Starts the changes follower in the given mode.
      *
      * @param mode the mode in which to run the ChangesFollower
      * @return
diff --git a/modules/common/src/main/java/com/ibm/cloud/cloudant/security/CouchDbSessionAuthenticator.java b/modules/common/src/main/java/com/ibm/cloud/cloudant/security/CouchDbSessionAuthenticator.java
index 44ad9a680..bc70be3c6 100644
--- a/modules/common/src/main/java/com/ibm/cloud/cloudant/security/CouchDbSessionAuthenticator.java
+++ b/modules/common/src/main/java/com/ibm/cloud/cloudant/security/CouchDbSessionAuthenticator.java
@@ -99,6 +99,8 @@ public void setSessionUrl(String serviceUrl) {
     }
 
     /**
+     * Sets the HTTP headers to use with session requests.
+     *
      * @param headers
      */
     @Override
diff --git a/pom.xml b/pom.xml
index 703b1e9c3..76c20c867 100644
--- a/pom.xml
+++ b/pom.xml
@@ -327,7 +327,7 @@
                         <dependency>
                             <groupId>com.puppycrawl.tools</groupId>
                             <artifactId>checkstyle</artifactId>
-                            <version>13.8.0</version>
+                            <version>13.9.0</version>
                         </dependency>
                     </dependencies>
                     <executions>