diff --git a/pom.xml b/pom.xml
index f2052037..e6165c49 100644
--- a/pom.xml
+++ b/pom.xml
@@ -113,7 +113,7 @@
     <dependency>
       <groupId>org.apache.poi</groupId>
       <artifactId>poi-ooxml</artifactId>
-      <version>3.16</version>
+      <version>3.17</version>
     </dependency>
     <dependency>
       <groupId>org.apache.poi</groupId>
@@ -139,7 +139,7 @@
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
-      <version>2.8.8</version>
+      <version>2.8.10</version>
     </dependency>
 
     <dependency>
diff --git a/src/main/java/com/monitorjbl/xlsx/StreamingReader.java b/src/main/java/com/monitorjbl/xlsx/StreamingReader.java
index d4c337c8..bd9d3360 100644
--- a/src/main/java/com/monitorjbl/xlsx/StreamingReader.java
+++ b/src/main/java/com/monitorjbl/xlsx/StreamingReader.java
@@ -15,6 +15,7 @@
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.util.StaxHelper;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
 import org.apache.poi.xssf.model.SharedStringsTable;
 import org.apache.poi.xssf.model.StylesTable;
@@ -24,7 +25,6 @@
 import org.w3c.dom.NodeList;
 
 import javax.xml.stream.XMLEventReader;
-import javax.xml.stream.XMLInputFactory;
 import javax.xml.stream.XMLStreamException;
 import java.io.File;
 import java.io.FileOutputStream;
@@ -358,7 +358,7 @@ public StreamingReader read(File f) {
           throw new MissingSheetException("Unable to find sheet at index [" + sheetIndex + "]");
         }
 
-        XMLEventReader parser = XMLInputFactory.newInstance().createXMLEventReader(sheet);
+        XMLEventReader parser = StaxHelper.newXMLInputFactory().createXMLEventReader(sheet);
 
         return new StreamingReader(new StreamingWorkbookReader(sst, sstCache, pkg, new StreamingSheetReader(sst, styles, parser, use1904Dates, rowCacheSize),
             this));
diff --git a/src/main/java/com/monitorjbl/xlsx/impl/StreamingSheet.java b/src/main/java/com/monitorjbl/xlsx/impl/StreamingSheet.java
index 1ce14948..93871e17 100644
--- a/src/main/java/com/monitorjbl/xlsx/impl/StreamingSheet.java
+++ b/src/main/java/com/monitorjbl/xlsx/impl/StreamingSheet.java
@@ -544,14 +544,6 @@ public boolean getScenarioProtect() {
     throw new UnsupportedOperationException();
   }
 
-  /**
-   * Not supported
-   */
-  @Override
-  public void setZoom(int numerator, int denominator) {
-    throw new UnsupportedOperationException();
-  }
-
   /**
    * Not supported
    */
@@ -816,14 +808,6 @@ public void autoSizeColumn(int column, boolean useMergedCells) {
     throw new UnsupportedOperationException();
   }
 
-  /**
-   * Not supported
-   */
-  @Override
-  public Comment getCellComment(int row, int column) {
-    throw new UnsupportedOperationException();
-  }
-
   /**
    * Not supported
    */
diff --git a/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbook.java b/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbook.java
index 31e1de95..46e33c9e 100644
--- a/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbook.java
+++ b/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbook.java
@@ -231,14 +231,6 @@ public Font createFont() {
     throw new UnsupportedOperationException();
   }
 
-  /**
-   * Not supported
-   */
-  @Override
-  public Font findFont(short boldWeight, short color, short fontHeight, String name, boolean italic, boolean strikeout, short typeOffset, byte underline) {
-    throw new UnsupportedOperationException();
-  }
-
   /**
    * Not supported
    */
diff --git a/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbookReader.java b/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbookReader.java
index 5a16c396..a3569f24 100644
--- a/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbookReader.java
+++ b/src/main/java/com/monitorjbl/xlsx/impl/StreamingWorkbookReader.java
@@ -11,6 +11,7 @@
 import org.apache.poi.poifs.crypt.EncryptionInfo;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.util.StaxHelper;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
 import org.apache.poi.xssf.eventusermodel.XSSFReader.SheetIterator;
 import org.apache.poi.xssf.model.SharedStringsTable;
@@ -21,7 +22,6 @@
 import org.w3c.dom.NodeList;
 
 import javax.xml.stream.XMLEventReader;
-import javax.xml.stream.XMLInputFactory;
 import javax.xml.stream.XMLStreamException;
 import java.io.File;
 import java.io.FileOutputStream;
@@ -156,7 +156,7 @@ void loadSheets(XSSFReader reader, SharedStringsTable sst, StylesTable stylesTab
     //Iterate over the loaded streams
     int i = 0;
     for(URI uri : sheetStreams.keySet()) {
-      XMLEventReader parser = XMLInputFactory.newInstance().createXMLEventReader(sheetStreams.get(uri));
+      XMLEventReader parser = StaxHelper.newXMLInputFactory().createXMLEventReader(sheetStreams.get(uri));
       sheets.add(new StreamingSheet(sheetProperties.get(i++).get("name"), new StreamingSheetReader(sst, stylesTable, parser, use1904Dates, rowCacheSize)));
     }
   }
diff --git a/src/main/java/com/monitorjbl/xlsx/sst/BufferedStringsTable.java b/src/main/java/com/monitorjbl/xlsx/sst/BufferedStringsTable.java
index 4d738ac6..073e29ef 100644
--- a/src/main/java/com/monitorjbl/xlsx/sst/BufferedStringsTable.java
+++ b/src/main/java/com/monitorjbl/xlsx/sst/BufferedStringsTable.java
@@ -3,12 +3,12 @@
 import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
 import org.apache.poi.openxml4j.opc.OPCPackage;
 import org.apache.poi.openxml4j.opc.PackagePart;
+import org.apache.poi.util.StaxHelper;
 import org.apache.poi.xssf.model.SharedStringsTable;
 import org.apache.poi.xssf.usermodel.XSSFRelation;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRst;
 
 import javax.xml.stream.XMLEventReader;
-import javax.xml.stream.XMLInputFactory;
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.events.XMLEvent;
 import java.io.File;
@@ -33,8 +33,7 @@ private BufferedStringsTable(PackagePart part, File file, int cacheSize) throws
   @Override
   public void readFrom(InputStream is) throws IOException {
     try {
-      XMLInputFactory xmlInputFactory = XMLInputFactory.newInstance();
-      XMLEventReader xmlEventReader = xmlInputFactory.createXMLEventReader(is);
+      XMLEventReader xmlEventReader = StaxHelper.newXMLInputFactory().createXMLEventReader(is);
 
       while(xmlEventReader.hasNext()) {
         XMLEvent xmlEvent = xmlEventReader.nextEvent();
diff --git a/src/test/java/com/monitorjbl/xlsx/StreamingWorkbookTest.java b/src/test/java/com/monitorjbl/xlsx/StreamingWorkbookTest.java
index 251a0020..43b6bd6d 100644
--- a/src/test/java/com/monitorjbl/xlsx/StreamingWorkbookTest.java
+++ b/src/test/java/com/monitorjbl/xlsx/StreamingWorkbookTest.java
@@ -1,9 +1,6 @@
 package com.monitorjbl.xlsx;
 
-import org.apache.poi.ss.usermodel.Cell;
-import org.apache.poi.ss.usermodel.Row;
-import org.apache.poi.ss.usermodel.Sheet;
-import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.usermodel.*;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
@@ -13,8 +10,6 @@
 import java.util.Iterator;
 import java.util.Locale;
 
-import static org.apache.poi.ss.usermodel.Cell.CELL_TYPE_FORMULA;
-import static org.apache.poi.ss.usermodel.Cell.CELL_TYPE_NUMERIC;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
@@ -98,8 +93,8 @@ public void testFormulaCells() throws Exception {
       Row row3 = rowIterator.next();
       Cell A3 = row3.getCell(0);
 
-      assertEquals("Cell A3 should be of type formula", CELL_TYPE_FORMULA, A3.getCellType());
-      assertEquals("Cell A3's value should be of type numeric", CELL_TYPE_NUMERIC, A3.getCachedFormulaResultType());
+      assertEquals("Cell A3 should be of type formula", CellType.FORMULA, A3.getCellTypeEnum());
+      assertEquals("Cell A3's value should be of type numeric", CellType.NUMERIC, A3.getCachedFormulaResultTypeEnum());
       assertEquals("Wrong formula", "SUM(A1:A2)", A3.getCellFormula());
     }
   }