diff --git a/poi-examples/src/main/java9/module-info.class b/poi-examples/src/main/java9/module-info.class
index 274689a..f359354 100644
--- a/poi-examples/src/main/java9/module-info.class
+++ b/poi-examples/src/main/java9/module-info.class
Binary files differ
diff --git a/poi-integration/src/test/java9/module-info.class b/poi-integration/src/test/java9/module-info.class
index 91f8145..4f3e0f3 100644
--- a/poi-integration/src/test/java9/module-info.class
+++ b/poi-integration/src/test/java9/module-info.class
Binary files differ
diff --git a/poi/src/main/java/org/apache/poi/hssf/model/InternalSheet.java b/poi/src/main/java/org/apache/poi/hssf/model/InternalSheet.java
index 4821047..055acaa 100644
--- a/poi/src/main/java/org/apache/poi/hssf/model/InternalSheet.java
+++ b/poi/src/main/java/org/apache/poi/hssf/model/InternalSheet.java
@@ -55,7 +55,7 @@
  * The structures of the highlevel API use references to this to perform most of their
  * operations.  Its probably unwise to use these low level structures directly unless you
  * really know what you're doing.  I recommend you read the Microsoft Excel 97 Developer's
- * Kit (Microsoft Press) and the documentation at http://sc.openoffice.org/excelfileformat.pdf
+ * Kit (Microsoft Press) and the documentation at https://sc.openoffice.org/excelfileformat.pdf
  * before even attempting to use this.
  *
  * @see InternalWorkbook
diff --git a/poi/src/main/java/org/apache/poi/hssf/model/InternalWorkbook.java b/poi/src/main/java/org/apache/poi/hssf/model/InternalWorkbook.java
index c811f5e..cff4822 100644
--- a/poi/src/main/java/org/apache/poi/hssf/model/InternalWorkbook.java
+++ b/poi/src/main/java/org/apache/poi/hssf/model/InternalWorkbook.java
@@ -74,7 +74,7 @@
  * The structures of the highlevel API use references to this to perform most of their
  * operations.  Its probably unwise to use these low level structures directly unless you
  * really know what you're doing.  I recommend you read the Microsoft Excel 97 Developer's
- * Kit (Microsoft Press) and the documentation at http://sc.openoffice.org/excelfileformat.pdf
+ * Kit (Microsoft Press) and the documentation at https://sc.openoffice.org/excelfileformat.pdf
  * before even attempting to use this.
  *
  * @see HSSFWorkbook
diff --git a/poi/src/main/java/org/apache/poi/hssf/record/chart/ChartRecord.java b/poi/src/main/java/org/apache/poi/hssf/record/chart/ChartRecord.java
index 0512e68..edf48a7 100644
--- a/poi/src/main/java/org/apache/poi/hssf/record/chart/ChartRecord.java
+++ b/poi/src/main/java/org/apache/poi/hssf/record/chart/ChartRecord.java
@@ -32,7 +32,7 @@
  * The chart record is used to define the location and size of a chart.<p>
  *
  * Chart related records don't seem to be covered in either the
- * <A HREF="http://sc.openoffice.org/excelfileformat.pdf">OOO</A>
+ * <A HREF="https://sc.openoffice.org/excelfileformat.pdf">OOO</A>
  *  or the
  * <A HREF="http://download.microsoft.com/download/0/B/E/0BE8BDD7-E5E8-422A-ABFD-4342ED7AD886/Excel97-2007BinaryFileFormat(xls)Specification.pdf">MS</A>
  *  documentation.
diff --git a/poi/src/main/java9/module-info.class b/poi/src/main/java9/module-info.class
index e9fb506..7ca4ecd 100644
--- a/poi/src/main/java9/module-info.class
+++ b/poi/src/main/java9/module-info.class
Binary files differ
diff --git a/poi/src/test/java9/module-info.class b/poi/src/test/java9/module-info.class
index fd6f5c8..b145aa3 100644
--- a/poi/src/test/java9/module-info.class
+++ b/poi/src/test/java9/module-info.class
Binary files differ