diff --git a/pom.xml b/pom.xml
index d2cb658..81f630a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,13 +29,13 @@
     <maven.compiler.source>1.7</maven.compiler.source>
     <maven.compiler.target>1.7</maven.compiler.target>
     <testng.version>6.10</testng.version>
-    <toolchains-plugin.version>1.1</toolchains-plugin.version>
-    <surefire-plugin.version>2.19.1</surefire-plugin.version>
-    <source-plugin.version>3.0.1</source-plugin.version>
-    <javadoc-plugin.version>2.10.4</javadoc-plugin.version>
-    <guava.version>19.0</guava.version>
+    <toolchains-plugin.version>3.0.0</toolchains-plugin.version>
+    <surefire-plugin.version>2.22.2</surefire-plugin.version>
+    <source-plugin.version>3.2.0</source-plugin.version>
+    <javadoc-plugin.version>3.1.1</javadoc-plugin.version>
+    <guava.version>28.1-android</guava.version>
     <gpg-plugin.version>1.6</gpg-plugin.version>
-    <staging-plugin.version>1.6.7</staging-plugin.version>
+    <staging-plugin.version>1.6.8</staging-plugin.version>
     <release-plugin.version>2.5.3</release-plugin.version>
     <apache-derby.version>10.12.1.1</apache-derby.version>
     <skipSigning>true</skipSigning>
@@ -257,5 +257,5 @@
       </properties>
     </profile>
   </profiles>
-  <version>1.9.2-SNAPSHOT</version>
+  <version>1.9.3-SNAPSHOT</version>
 </project>