diff --git a/.gitignore b/.gitignore
index c4d113884..84a3a1cff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,5 @@ target/
 .classpath
 .project
 .settings/
+
+dependency-reduced-pom.xml
diff --git a/pom.xml b/pom.xml
index 3a0f6dc3f..713319e3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,17 +32,17 @@
     <jdkLevel>1.8</jdkLevel>
 
     <commons-io.version>2.5</commons-io.version>
-    <commons-lang.version>3.4</commons-lang.version>
+    <commons-lang.version>3.6</commons-lang.version>
     <commons-digester.version>3.2</commons-digester.version>
     <dwc-api.version>1.18-SNAPSHOT</dwc-api.version>
     <freemarker.version>2.3.25-incubating</freemarker.version>
     <gbif-common.version>0.38-SNAPSHOT</gbif-common.version>
     <gbif-registry-metadata.version>2.59</gbif-registry-metadata.version>
-    <guava.version>18.0</guava.version>
+    <guava.version>23.0</guava.version>
     <junit.version>4.12</junit.version>
-    <logback.version>1.1.7</logback.version>
-    <mockito.version>2.8.9</mockito.version>
-    <slf4j.version>1.7.21</slf4j.version>
+    <logback.version>1.2.3</logback.version>
+    <mockito.version>2.8.47</mockito.version>
+    <slf4j.version>1.7.25</slf4j.version>
   </properties>
 
   <repositories>
@@ -55,10 +55,31 @@
   <build>
     <defaultGoal>install</defaultGoal>
     <plugins>
-      <!--
-          to build jar with all dependencies:
-          mvn assembly:single
-      -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-shade-plugin</artifactId>
+        <configuration>
+          <artifactSet>
+            <includes>
+              <include>com.google.guava:guava</include>
+            </includes>
+          </artifactSet>
+          <relocations>
+            <relocation>
+              <pattern>com.google.common</pattern>
+              <shadedPattern>org.gbif.dwcaio.shaded.com.google.common</shadedPattern>
+            </relocation>
+          </relocations>
+        </configuration>
+        <executions>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>shade</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <artifactId>maven-assembly-plugin</artifactId>
         <configuration>
diff --git a/src/main/java/org/gbif/dwca/record/RecordIterator.java b/src/main/java/org/gbif/dwca/record/RecordIterator.java
index 45fb31b54..04ceaa8b4 100644
--- a/src/main/java/org/gbif/dwca/record/RecordIterator.java
+++ b/src/main/java/org/gbif/dwca/record/RecordIterator.java
@@ -24,6 +24,7 @@
 import org.gbif.utils.file.csv.CSVReader;
 
 import java.io.IOException;
+import java.util.Collections;
 import java.util.Iterator;
 import java.util.Map;
 
@@ -58,7 +59,7 @@ public RecordIterator(ClosableIterator<String[]> recordSource, ArchiveField id,
     this.replaceEntities = replaceEntities;
     closable = recordSource;
     if (closable == null) {
-      Iterator<String[]> empty = Iterators.emptyIterator();
+      Iterator<String[]> empty = Collections.emptyIterator();
       iter = Iterators.peekingIterator(empty);
     } else {
       iter = Iterators.peekingIterator(closable);