diff --git a/pom.xml b/pom.xml
index 3628d35c..75b3f71e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -224,7 +224,7 @@
         <dependency>
             <groupId>net.sourceforge.lept4j</groupId>
             <artifactId>lept4j</artifactId>
-            <version>1.9.3</version>
+            <version>1.9.4</version>
         </dependency>
         <dependency>
             <groupId>org.jboss</groupId>
diff --git a/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java b/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java
index 87a90cf3..13b1f8de 100644
--- a/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java
+++ b/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java
@@ -64,8 +64,8 @@ public class ImageIOHelper {
     final static String OUTPUT_FILE_NAME = "Tesstmp";
     final static String TIFF_EXT = ".tif";
     final static String TIFF_FORMAT = "tiff";
-    final static String JAI_IMAGE_WRITER_MESSAGE = "Need to install JAI Image I/O package.\nhttps://java.net/projects/jai-imageio/";
-    final static String JAI_IMAGE_READER_MESSAGE = "Unsupported image format. May need to install JAI Image I/O package.\nhttps://java.net/projects/jai-imageio/";
+    final static String JAI_IMAGE_WRITER_MESSAGE = "Need to install JAI Image I/O package.\nhttps://github.com/jai-imageio/jai-imageio-core";
+    final static String JAI_IMAGE_READER_MESSAGE = "Unsupported image format. May need to install JAI Image I/O package.\nhttps://github.com/jai-imageio/jai-imageio-core";
 
     /**
      * Creates a list of TIFF image files from an image file. It basically
diff --git a/src/main/resources/versionchanges.txt b/src/main/resources/versionchanges.txt
index 3c879a88..36f30f73 100644
--- a/src/main/resources/versionchanges.txt
+++ b/src/main/resources/versionchanges.txt
@@ -145,3 +145,5 @@ Version 4.0.1 (2 May 2018)
 
 Version 4.0.2 (3 May 2018)
 - Replace JNA string constant Platform.RESOURCE_PREFIX
+- Update jai-imageio url
+- Update Lept4J to 1.9.4