diff --git a/README.md b/README.md
index 836cf55e..32f1ffb0 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ Requirements
 * escaped < and > in the glossary data
 * Corrected the path to the screenshot images to be relative so that they work when served off a server and locally.
 * various sonar fixes
+* Upgraded guava to 21.0 - required to support selenium 3.3 and latest firefox drivers
 
 1.0.5
 -----
diff --git a/pom.xml b/pom.xml
index a26d9fe7..1b7125e6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -118,7 +118,9 @@
     </modules>
 
     <properties>
+<!--
         <substeps.version>1.0.2-IM-SNAPSHOT</substeps.version>
+-->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
 
@@ -129,6 +131,7 @@
         <junit.version>4.12</junit.version>
         <hamcrest.version>1.3</hamcrest.version>
         <mockito.version>2.0.2-beta</mockito.version>
+        <guava.version>21.0</guava.version>
 
         <jacoco.version>0.7.6.201602180812</jacoco.version>
 
@@ -224,7 +227,7 @@
             <dependency>
                 <groupId>com.google.guava</groupId>
                 <artifactId>guava</artifactId>
-                <version>18.0</version>
+                <version>${guava.version}</version>
             </dependency>
             <dependency>
                 <groupId>net.sourceforge.findbugs</groupId>